Most previous studies have investigated country-of-origin effect for agricultural products from the economically developed country, but few have focused on the impact of country-of-origin on agricultural products from...Most previous studies have investigated country-of-origin effect for agricultural products from the economically developed country, but few have focused on the impact of country-of-origin on agricultural products from economically developing countries. Using a national online survey in France, we determine French consumers＇ perceptions and preferences for fresh fruit from China. Results of ordered logit models show that fresh fruit from China was perceived as low quality and unsafe. Respondents who care about country-of-origin were less likely to purchase fresh fruit from China, while those who care about brand were more likely to buy Chinese fresh fruit. Risk perception and quality perception both had a significant impact on the purchase of Chinese fresh fruit. Results of latent class models obtained with key consumer demographics show that heterogeneous preferences exist among different consumer groups. The results provide critical information to both China and other economically developing countries in their efforts to improve market penetration in economically developed countries.展开更多
Based on perceived risk,the impacts of different kinds of risks on consumer's purchase intention are tested by using the investigation data of 2016,and perceived risks of consumers from different groups have diffe...Based on perceived risk,the impacts of different kinds of risks on consumer's purchase intention are tested by using the investigation data of 2016,and perceived risks of consumers from different groups have different impacts on purchase intention. Via interviews and online questionnaires,425 copies of effective samples were obtained. The structural equation modeling is used for research. Results display that product risk significantly affects purchase intention,and perceived risk among different groups has significant difference. According to research conclusion,the authors think that consumer should actively collect all kinds of information and take effective risk avoidance measures; Taobao platform should continuously perfect purchase rule,punish the behavior of leaking buyers' information,and continuously update Alipay software to prevent hacker intrusion; business should guarantee product quality,open information and make scientific marketing strategy.展开更多
[ Objective] The content of total antimony （Sb） in fresh fruit was investigated and its pollution was evaluated, to provide the basic data for diet exposure evaluation. [ Method] The content of total Sb in 194 sampl...[ Objective] The content of total antimony （Sb） in fresh fruit was investigated and its pollution was evaluated, to provide the basic data for diet exposure evaluation. [ Method] The content of total Sb in 194 samples was detected by hydride generation-atomic fluorescence spectrometry （HG-AFS）, and the Sb pollution in several fruits was evaluated by the method of single factor pollution index. [ Result ] The mean of total Sb was 0. 005 6 mg/kg, and the median was 0.003 8 mg/kg. The minimum value was not detected while the maximum value was O. 21 mg/kg, and the confidence interval was ND-O. 019 mg/kg （PS-P95）. The medi- ans of total Sb content in different fruits successively were dragon fruit （0.011 0 mg/kg） 〉 kiwi fruit （0.008 0 mg/kg） 〉 peach （0.006 0 mg/kg）. According to the method of single factor pollution index, the index from all samples was less than 0.2, suggesting that the samples involved were under the normal background value. [ Conclusion ] The Sb was detected in all samples but under the background value, and it was concluded that there was no Sb pollution in fresh fruit in Hunan Province.展开更多
By the survey of consumers'behaviour of purchasing fresh fruits,this paper researches the group characteristics of people who consume traceable fresh fruits,and analyses the main factors influencing consumers'...By the survey of consumers'behaviour of purchasing fresh fruits,this paper researches the group characteristics of people who consume traceable fresh fruits,and analyses the main factors influencing consumers'willingness to purchase.Based on this,corresponding proposals are put forward as follows:first,the government should not only focus on supervision and regulation over food security,but also strengthen the education of food security knowledge,publicity and promotion of traceable system;second,the government and related enterprise should particularly pay attention to the impact of consumers'individual characteristics on willingness to purchase and purchase behaviours,and work out feasible strategy of traceable food marketing,according to consumers'preferences,consumers'attention to health,consumers'attention to the healthy growth of children and other factors;finally,when implementing the system,the state and the government should take into full account the average income level of consumers,give full play to the effect of scale merit,and work out the reasonable price that can be accepted by most of consumers.展开更多
[Objectives]This study was conducted to clarify the differences of volatile components in fresh fruit of Morinda citrifolia L.from different origins.[Methods]The method of HS-SPME-GC/MS detection was used to determine...[Objectives]This study was conducted to clarify the differences of volatile components in fresh fruit of Morinda citrifolia L.from different origins.[Methods]The method of HS-SPME-GC/MS detection was used to determine the volatile chemical components in fresh fruit of M.citrifolia.[Results]52,52 and 45 volatile components were identified from the fresh fruit of M.citrifolia from Xisha,Wanning and Haikou,respectively.Among them,the number and content of the identified esters were relatively high,mainly methyl caprylate,ethyl caprylate,4-pentenyl caproate,3-methylbuten-2-enyl caprylate,methyl caproate,and ethyl caproate.There were also fatty acids,alcohols,phenols,ketones,aldehydes and other substances.There were 33 common ingredients in the fruit from the three origins,mainly including caprylic acid,caproic acid,capric acid,methyl caprylate,ethyl caprylate,4-pentenyl caproate,3-methylbutene-2-enyl caprylate,methyl caproate,ethyl caproate,methyl caprate and hexyl caproate.[Conclusions]The types and contents of volatile components in fresh fruit of M.citrifolia from different origins were significantly different.展开更多
Robot technology is a very promising technology for agricultural sector, but the existing industrial robot could not deliver the above-mentioned criteria. Industrial robot mainly uses high voltage electrical power, wh...Robot technology is a very promising technology for agricultural sector, but the existing industrial robot could not deliver the above-mentioned criteria. Industrial robot mainly uses high voltage electrical power, which is not available at field and outdoor operation. The only available and reliable power is a hydraulic from the tractor. The harvester robot consumes the hydraulic power from the tractor and at the same time the tractor can be used as a traveling device for the robot. This paper describes the study on the development of autonomous tractor for the oil palm harvester. The development took considerations on the design of the electro-hydraulic system and the control software for the robot structure to be flexible enough to operate in plantation environment.展开更多
Psidium guajava fruits are consumed fresh or processed (beverages, syrup, ice cream, jams and jellies). Guayaba is a fruit highly perishable and susceptible to damage during the postharvest. One strategy to overcome t...Psidium guajava fruits are consumed fresh or processed (beverages, syrup, ice cream, jams and jellies). Guayaba is a fruit highly perishable and susceptible to damage during the postharvest. One strategy to overcome this problem is its processing by using techniques that preserve its organoleptic, nutritive and functional properties and allow getting food with added value. The purpose of this study was to obtain flour from fresh fruits cultivated in Argentina Northwestern by lyophilization and to determine the antioxidant activity and the main phytochemicals present in fresh fruits and flour. Nutritional composition (sugar, protein and fat) and the bioactive phytochemicals (total phenolic compounds, flavonoid phenolic, condensed and hydrolizable tannin, ascorbic acid, pigments such as anthocyanin and carotenoids) as well as fiber content, were evaluated. The flour preserved flavor, aroma and color of pulp from fresh fruits. The flour contained around 30% of sugar, 20% of total protein, 0.5% of fat and high level of crude fiber. Carotenoids and ascorbic acid were the dominant phytochemicals in flour as well as in fresh fruits. The guayaba flour showed antioxidant activity with SC50 values similar to fresh fruits. The flour showed nutraceutical characteristics that are demanded by functional food and could be used as a dietary supplement.展开更多
This paper presents findings of an experiment for the comparison of sugar concentration in extracted juice of fresh fruit to that of commercially-bottled 100% fruit juice with a “no sugar added” attribute. The goal ...This paper presents findings of an experiment for the comparison of sugar concentration in extracted juice of fresh fruit to that of commercially-bottled 100% fruit juice with a “no sugar added” attribute. The goal of the study was to determine if the sugar content of bottled 100% fruit juice with a “no sugar added” label is equivalent to that of extracted juices of fresh fruits. The reported study was performed to address the potential concern that commercially-bottled 100% fruit juices with “no sugar added” may contain higher sugar content than extracted juice of fresh fruit. The fruit juices that were tested included apple, grapefruit, orange, pineapple, pomegranate, red grape and white grape. All bottled juices and fresh fruits were purchased in Toledo, Ohio, USA during the winter of 2012. The fresh fruits were juiced and three samples were tested for sugar concentration using a Brix refractometer. The same testing protocol was also applied to the bottled 100% fruit juice. Application of the Mann-Whitney test on the experimental data demonstrated no statistically significant difference (p > 0.05). The results suggested that the sugar content in the commercially bottled 100% fruit juice with the “no sugar added” label is an accurate representation of sugar content in the freshly-extracted juice of the corresponding fruit.展开更多
To the Editor:Diabetes,which is a rapidly growing global health concern,is prevalent in 12.4%of adults in China.[1]People with diabetes usually limit fruit intake to maintain blood glucose concentrations.However,there...To the Editor:Diabetes,which is a rapidly growing global health concern,is prevalent in 12.4%of adults in China.[1]People with diabetes usually limit fruit intake to maintain blood glucose concentrations.However,there has been limited research on the effect of the frequency of fresh fruit intake on the incidence of cardiovascular events and mortality in patients with diabetes.This gap in knowledge extends to understanding the optimal level of fruit consumption for cardiovascular risk reduction and its variability across patient subgroups and event subtypes.We used a prospective cohort design to investigate the association between the frequency of fresh fruit intake and the risk of cardiovascular events,including ischemic heart disease and stroke,in patients with diabetes.We also examined potential differences in this relationship across various subgroups of individuals with diabetes.展开更多
The existing mechanized oil palm harvester is claimed to be unsuccessful due to its inefficiency to harvest Fresh Fruit Bunch(FFB).It takes a lot of time compared to the conventional harvesting method,using human powe...The existing mechanized oil palm harvester is claimed to be unsuccessful due to its inefficiency to harvest Fresh Fruit Bunch(FFB).It takes a lot of time compared to the conventional harvesting method,using human power.Therefore a study was carried out using Denavit and Hartenberg(D-H)approach to automate the five Degrees of Freedom(DOF)harvester manipulator.The general objective was to reduce the number of workers required for harvesting as well as to provide comfortable ergonomic for the operator of oil palm harvester.The D-H’s convention was used for selecting frames of reference in robotics application which has become the standard way of representing robots and modeling their motions.In this study,the forward kinematics and inverse kinematics were used to deduce joint angles variables while the conventional Jacobian was used for motion velocity computation.The formulated inverse equations were tested manually on the harvester with given locations to obtain deduced joint angles.The results were θ_(1)=129.64°,θ_(3)=180°,θ_(4)=90°,which were quite accurate.Thus,the kinematics analysis of harvester arm automation was done successfully.展开更多
Background:Existing evidence suggests that fruit consumption is a significant influencing factor for chronic obstructive pulmonary disease(COPD),but this is unclear in the Chinese population.We examined the associatio...Background:Existing evidence suggests that fruit consumption is a significant influencing factor for chronic obstructive pulmonary disease(COPD),but this is unclear in the Chinese population.We examined the association of fresh fruit consumption with the risk of COPD-related hospitalization and death in a nationwide,population-based prospective cohort from China.Methods:Between 2004 and 2008,the China Kadoorie Biobank recruited>0.5 million adults aged 30 to 79 years from ten diverse regions across China.After excluding individuals diagnosed with major chronic diseases and prevalent COPD,the prospective analysis included 421,428 participants.Cox regression was used to calculate the hazard ratios(HRs)for the association between fresh fruit consumption and risk of COPD-related hospitalization and death,with adjustment for established and potential confounders.Results:During a mean follow-up of 10.9 years,11,292 COPD hospitalization events and deaths were documented,with an overall incidence rate of 2.47/1000 person-years.Participants who consumed fresh fruit daily had a 22%lower risk of COPD-related hospitalization and death compared with non-consumers(HR=0.78,95%confidence interval[CI]:0.71-0.87).The inverse association between fresh fruit consumption and COPD-related hospitalization and death was stronger among non-current smokers and participants with normal body mass index(BMI)(18.5 kg/m^(2)≤BMI<24.0 kg/m^(2));the corresponding HRs for daily fresh fruit consumption were 0.78(95%CI:0.68-0.89)and 0.69(95%CI:0.59-0.79)compared with their counterparts,respectively.Conclusions:High-frequency fruit consumption was associated with a lower risk of COPD in Chinese adults.Increasing fruit consumption,together with cigarette cessation and weight control,should be considered in the prevention and management of COPD.展开更多
基金supported by the USDA (United States Department of Agriculture) National Institute of Food and Agriculture (NIFA) (Hatch project FLA-FRE-005292)supported by the China Scholarship Council,the Humanities +1 种基金Social Science Fund of the Ministry of Education of China (13YJC790138)the Jiangsu University Philosophy and Social Science Fund,China (2017SJB0191)
文摘Most previous studies have investigated country-of-origin effect for agricultural products from the economically developed country, but few have focused on the impact of country-of-origin on agricultural products from economically developing countries. Using a national online survey in France, we determine French consumers＇ perceptions and preferences for fresh fruit from China. Results of ordered logit models show that fresh fruit from China was perceived as low quality and unsafe. Respondents who care about country-of-origin were less likely to purchase fresh fruit from China, while those who care about brand were more likely to buy Chinese fresh fruit. Risk perception and quality perception both had a significant impact on the purchase of Chinese fresh fruit. Results of latent class models obtained with key consumer demographics show that heterogeneous preferences exist among different consumer groups. The results provide critical information to both China and other economically developing countries in their efforts to improve market penetration in economically developed countries.
文摘Based on perceived risk,the impacts of different kinds of risks on consumer's purchase intention are tested by using the investigation data of 2016,and perceived risks of consumers from different groups have different impacts on purchase intention. Via interviews and online questionnaires,425 copies of effective samples were obtained. The structural equation modeling is used for research. Results display that product risk significantly affects purchase intention,and perceived risk among different groups has significant difference. According to research conclusion,the authors think that consumer should actively collect all kinds of information and take effective risk avoidance measures; Taobao platform should continuously perfect purchase rule,punish the behavior of leaking buyers' information,and continuously update Alipay software to prevent hacker intrusion; business should guarantee product quality,open information and make scientific marketing strategy.
基金Supported by Scientific Research Project of Medicine and Health Care in Hunan Province(B2014-162)Scientific Research Project of Xiangtan Science and Technology Bureau(SF20141003)
文摘[ Objective] The content of total antimony （Sb） in fresh fruit was investigated and its pollution was evaluated, to provide the basic data for diet exposure evaluation. [ Method] The content of total Sb in 194 samples was detected by hydride generation-atomic fluorescence spectrometry （HG-AFS）, and the Sb pollution in several fruits was evaluated by the method of single factor pollution index. [ Result ] The mean of total Sb was 0. 005 6 mg/kg, and the median was 0.003 8 mg/kg. The minimum value was not detected while the maximum value was O. 21 mg/kg, and the confidence interval was ND-O. 019 mg/kg （PS-P95）. The medi- ans of total Sb content in different fruits successively were dragon fruit （0.011 0 mg/kg） 〉 kiwi fruit （0.008 0 mg/kg） 〉 peach （0.006 0 mg/kg）. According to the method of single factor pollution index, the index from all samples was less than 0.2, suggesting that the samples involved were under the normal background value. [ Conclusion ] The Sb was detected in all samples but under the background value, and it was concluded that there was no Sb pollution in fresh fruit in Hunan Province.
基金Supported by Shanghai College Student Innovation Activity Project in 2009
文摘By the survey of consumers'behaviour of purchasing fresh fruits,this paper researches the group characteristics of people who consume traceable fresh fruits,and analyses the main factors influencing consumers'willingness to purchase.Based on this,corresponding proposals are put forward as follows:first,the government should not only focus on supervision and regulation over food security,but also strengthen the education of food security knowledge,publicity and promotion of traceable system;second,the government and related enterprise should particularly pay attention to the impact of consumers'individual characteristics on willingness to purchase and purchase behaviours,and work out feasible strategy of traceable food marketing,according to consumers'preferences,consumers'attention to health,consumers'attention to the healthy growth of children and other factors;finally,when implementing the system,the state and the government should take into full account the average income level of consumers,give full play to the effect of scale merit,and work out the reasonable price that can be accepted by most of consumers.
基金Supported by Hainan Province Basic and Applied Basic Research Program(Natural Science)High-level Talents(No.2019RC318)Nanfeng Special Phase III:Investigation and Protection of Cultivated Land and Fishery Water Resources(NFZX2021)the Central Public-interest Scientific Institution Basal Research Fund for Chinese Academy of Tropical Agricultural Sciences(No.1630032022022)。
文摘[Objectives]This study was conducted to clarify the differences of volatile components in fresh fruit of Morinda citrifolia L.from different origins.[Methods]The method of HS-SPME-GC/MS detection was used to determine the volatile chemical components in fresh fruit of M.citrifolia.[Results]52,52 and 45 volatile components were identified from the fresh fruit of M.citrifolia from Xisha,Wanning and Haikou,respectively.Among them,the number and content of the identified esters were relatively high,mainly methyl caprylate,ethyl caprylate,4-pentenyl caproate,3-methylbuten-2-enyl caprylate,methyl caproate,and ethyl caproate.There were also fatty acids,alcohols,phenols,ketones,aldehydes and other substances.There were 33 common ingredients in the fruit from the three origins,mainly including caprylic acid,caproic acid,capric acid,methyl caprylate,ethyl caprylate,4-pentenyl caproate,3-methylbutene-2-enyl caprylate,methyl caproate,ethyl caproate,methyl caprate and hexyl caproate.[Conclusions]The types and contents of volatile components in fresh fruit of M.citrifolia from different origins were significantly different.
文摘Robot technology is a very promising technology for agricultural sector, but the existing industrial robot could not deliver the above-mentioned criteria. Industrial robot mainly uses high voltage electrical power, which is not available at field and outdoor operation. The only available and reliable power is a hydraulic from the tractor. The harvester robot consumes the hydraulic power from the tractor and at the same time the tractor can be used as a traveling device for the robot. This paper describes the study on the development of autonomous tractor for the oil palm harvester. The development took considerations on the design of the electro-hydraulic system and the control software for the robot structure to be flexible enough to operate in plantation environment.
基金the financial support from Consejo de Investigación de la Universidad Nacional de Tucumán(CIUNT 26 D-430)Argentina,Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET PIP-704)Argentina and Agencia Nacional de Promoción Científica y Técnica(ANPCyT,PICT 1959).
文摘Psidium guajava fruits are consumed fresh or processed (beverages, syrup, ice cream, jams and jellies). Guayaba is a fruit highly perishable and susceptible to damage during the postharvest. One strategy to overcome this problem is its processing by using techniques that preserve its organoleptic, nutritive and functional properties and allow getting food with added value. The purpose of this study was to obtain flour from fresh fruits cultivated in Argentina Northwestern by lyophilization and to determine the antioxidant activity and the main phytochemicals present in fresh fruits and flour. Nutritional composition (sugar, protein and fat) and the bioactive phytochemicals (total phenolic compounds, flavonoid phenolic, condensed and hydrolizable tannin, ascorbic acid, pigments such as anthocyanin and carotenoids) as well as fiber content, were evaluated. The flour preserved flavor, aroma and color of pulp from fresh fruits. The flour contained around 30% of sugar, 20% of total protein, 0.5% of fat and high level of crude fiber. Carotenoids and ascorbic acid were the dominant phytochemicals in flour as well as in fresh fruits. The guayaba flour showed antioxidant activity with SC50 values similar to fresh fruits. The flour showed nutraceutical characteristics that are demanded by functional food and could be used as a dietary supplement.
文摘This paper presents findings of an experiment for the comparison of sugar concentration in extracted juice of fresh fruit to that of commercially-bottled 100% fruit juice with a “no sugar added” attribute. The goal of the study was to determine if the sugar content of bottled 100% fruit juice with a “no sugar added” label is equivalent to that of extracted juices of fresh fruits. The reported study was performed to address the potential concern that commercially-bottled 100% fruit juices with “no sugar added” may contain higher sugar content than extracted juice of fresh fruit. The fruit juices that were tested included apple, grapefruit, orange, pineapple, pomegranate, red grape and white grape. All bottled juices and fresh fruits were purchased in Toledo, Ohio, USA during the winter of 2012. The fresh fruits were juiced and three samples were tested for sugar concentration using a Brix refractometer. The same testing protocol was also applied to the bottled 100% fruit juice. Application of the Mann-Whitney test on the experimental data demonstrated no statistically significant difference (p > 0.05). The results suggested that the sugar content in the commercially bottled 100% fruit juice with the “no sugar added” label is an accurate representation of sugar content in the freshly-extracted juice of the corresponding fruit.
基金supported by the Fujian Province Pilot Project(No.2020Y0060)the Fujian Provincial Health Youth Project(No.2020QNB017)the Chinese Academy of Medical Sciences Innovation Fund for Medical Science(No.2021-I2M-1-011).
文摘To the Editor:Diabetes,which is a rapidly growing global health concern,is prevalent in 12.4%of adults in China.[1]People with diabetes usually limit fruit intake to maintain blood glucose concentrations.However,there has been limited research on the effect of the frequency of fresh fruit intake on the incidence of cardiovascular events and mortality in patients with diabetes.This gap in knowledge extends to understanding the optimal level of fruit consumption for cardiovascular risk reduction and its variability across patient subgroups and event subtypes.We used a prospective cohort design to investigate the association between the frequency of fresh fruit intake and the risk of cardiovascular events,including ischemic heart disease and stroke,in patients with diabetes.We also examined potential differences in this relationship across various subgroups of individuals with diabetes.
文摘The existing mechanized oil palm harvester is claimed to be unsuccessful due to its inefficiency to harvest Fresh Fruit Bunch(FFB).It takes a lot of time compared to the conventional harvesting method,using human power.Therefore a study was carried out using Denavit and Hartenberg(D-H)approach to automate the five Degrees of Freedom(DOF)harvester manipulator.The general objective was to reduce the number of workers required for harvesting as well as to provide comfortable ergonomic for the operator of oil palm harvester.The D-H’s convention was used for selecting frames of reference in robotics application which has become the standard way of representing robots and modeling their motions.In this study,the forward kinematics and inverse kinematics were used to deduce joint angles variables while the conventional Jacobian was used for motion velocity computation.The formulated inverse equations were tested manually on the harvester with given locations to obtain deduced joint angles.The results were θ_(1)=129.64°,θ_(3)=180°,θ_(4)=90°,which were quite accurate.Thus,the kinematics analysis of harvester arm automation was done successfully.
基金supported by grants from the National Key Research&Development Program of China(Nos.2016YFC0900500,2016YFC0900501,2016YFC0900504,and 2016YFC1303904)National Natural Science Foundation of China(Nos.81973125,81941018,91846303,and 91843302)
文摘Background:Existing evidence suggests that fruit consumption is a significant influencing factor for chronic obstructive pulmonary disease(COPD),but this is unclear in the Chinese population.We examined the association of fresh fruit consumption with the risk of COPD-related hospitalization and death in a nationwide,population-based prospective cohort from China.Methods:Between 2004 and 2008,the China Kadoorie Biobank recruited>0.5 million adults aged 30 to 79 years from ten diverse regions across China.After excluding individuals diagnosed with major chronic diseases and prevalent COPD,the prospective analysis included 421,428 participants.Cox regression was used to calculate the hazard ratios(HRs)for the association between fresh fruit consumption and risk of COPD-related hospitalization and death,with adjustment for established and potential confounders.Results:During a mean follow-up of 10.9 years,11,292 COPD hospitalization events and deaths were documented,with an overall incidence rate of 2.47/1000 person-years.Participants who consumed fresh fruit daily had a 22%lower risk of COPD-related hospitalization and death compared with non-consumers(HR=0.78,95%confidence interval[CI]:0.71-0.87).The inverse association between fresh fruit consumption and COPD-related hospitalization and death was stronger among non-current smokers and participants with normal body mass index(BMI)(18.5 kg/m^(2)≤BMI<24.0 kg/m^(2));the corresponding HRs for daily fresh fruit consumption were 0.78(95%CI:0.68-0.89)and 0.69(95%CI:0.59-0.79)compared with their counterparts,respectively.Conclusions:High-frequency fruit consumption was associated with a lower risk of COPD in Chinese adults.Increasing fruit consumption,together with cigarette cessation and weight control,should be considered in the prevention and management of COPD.
