Moisture and total sugar content are two important internal qualities of Huizao.In order to explore their correlation with external qualities,a novel method of moisture and total sugar content analysis was proposed ba...Moisture and total sugar content are two important internal qualities of Huizao.In order to explore their correlation with external qualities,a novel method of moisture and total sugar content analysis was proposed based on surface images.Firstly,five geometric features and seven texture features of Huizao were obtained to be the external quality indexes by digital image processing technology.Secondly,the wrinkle degree as an important index was extracted by marked watershed segmentation algorithm.According to the external quality the Huizao samples were grouped,and the moisture and total sugar content were determined through physical and chemical methods.Lastly,the moisture and total sugar content and twelve external indexes were all processed by step discriminatory analysis.Meanwhile,the regression models of moisture content with short diameter,contrast,and wrinkle degree and total sugar with wrinkle degree were established.The coefficients of the model were 0.9992 and 0.9978 respectively,and all the significance was less than 0.01,which show that the regression equation and regression coefficient effect are highly significant.The results indicate that the moisture and total sugar content of Huizao are greatly correlated with the wrinkle degree.The moisture and total sugar content are the highest when the wrinkle degree is at 2 to 3 grade,and they decrease gradually with the wrinkle degree increasing.Moisture content shows positive correlation with the size of Huizao.The results of model analysis agree well with the experimental results,which can provide valuable reference for improving Huizao grade diversity.展开更多
以早中熟品种“宁秋”“嘎啦”和“鲁丽”苹果为试材,采用非靶向代谢组学(UHPLC-OE-MS)分析方法,研究了“宁秋”苹果成熟过程中(青果期S1/转色期S2/成熟期S3)代谢组分对总糖的影响,以期为苹果糖分资源的充分利用提供参考依据。结果表明...以早中熟品种“宁秋”“嘎啦”和“鲁丽”苹果为试材,采用非靶向代谢组学(UHPLC-OE-MS)分析方法,研究了“宁秋”苹果成熟过程中(青果期S1/转色期S2/成熟期S3)代谢组分对总糖的影响,以期为苹果糖分资源的充分利用提供参考依据。结果表明:“宁秋”苹果具有优质的风味,并分析了淀粉和蔗糖代谢(starch and sucrose metabolism)、半乳糖代谢(galactose metabolism)、果糖和甘露糖代谢(fructose and mannose metabolism)初级代谢等主要KEGG途径。“宁秋”苹果果实发育过程中糖含量增加的原因与纤维生物糖、蔗糖、海藻糖、塔格糖、异亮氨酸、肌醇、葡萄糖醇、荆芥苷的合成有关。展开更多
S?o Paulo State is the main sugar cane producer and these agricultural activities are carried out in predominantly sandy soils, which require large amounts of phosphate fertilizers and amendments. This work evaluated ...S?o Paulo State is the main sugar cane producer and these agricultural activities are carried out in predominantly sandy soils, which require large amounts of phosphate fertilizers and amendments. This work evaluated the fertilizer-effect on the Al, Ba, Fe, Mn and Ni released in a watershed with influence of sugar cane crops in the S?o Paulo State, Brazil, namely the Monjolo Grande Stream basin. Five surface water sampling campaigns were carried out at the mouth of Monjolo Grande Stream in February, April, June, September and November 2010, characterizing the following parameters: discharge, pH, temperature, electric conductivity, dissolved oxygen and total and dissolved concentrations of Al, Ba, Fe, Mn and Ni. Approximately 99% of Al and Fe are transported annually in association with suspended sediments carried to the Monjolo Grande Stream by sheet erosion. The results also demonstrated that the increasing Al, Ba, Fe and Mn concentrations dissolved in the waters of the Monjolo Grande Stream basin in the wet season are associated to phosphate fertilizers and amendments that are used extensively in agrichemical activities. However, with the current application rates, there has been no increase in the dissolved concentrations of these metals at levels that could pose risks to human health.展开更多
To investigate the differences in physical and chemical indicators of tobacco stems from different parts of the‘Honghuadajinyuan’variety in the Dali tobacco-growing area,a comparative analysis of these indicators wa...To investigate the differences in physical and chemical indicators of tobacco stems from different parts of the‘Honghuadajinyuan’variety in the Dali tobacco-growing area,a comparative analysis of these indicators was conducted.The results showed that in terms of physical indicators,the tobacco stem length and content in middle part were significantly higher than those in other parts;the filling value of cut stems in upper part was significantly better than that in the middle and lower parts.In terms of chemical compositions,the content of total sugar and reducing sugar in middle part were the highest;the content of nicotine,total chlorine,and chlorine in upper part were the highest;the difference between total sugar and reducing sugar,sugar-to-nicotine ratio,nitrogen-to-nicotine ratio,and potassium-to-chlorine ratio in middle part were the best;and the potassium content in lower part was significantly higher than that in other parts.Correlation analysis showed that equilibrium moisture content was significantly positively correlated with total nitrogen content.Among them,equilibrium moisture content in upper part was positively correlated with nicotine content,and equilibrium moisture content in middle part was positively correlated with potassium and chlorine content.In addition,the filling value of cut stems in lower part was positively correlated with reducing sugar and total nitrogen content,while the filling value of cut stems in all parts was negatively correlated with the difference between total sugar and reducing sugar,sugar-to-nicotine ratio,and nitrogen-to-nicotine ratio.展开更多
基金The authors acknowledge that this research was financially supported by the National Key Research and Development Plan:Intelligent harvesting mechanism research and new structure development of special agricultural products(Grant No.2016YFD0701501).
文摘Moisture and total sugar content are two important internal qualities of Huizao.In order to explore their correlation with external qualities,a novel method of moisture and total sugar content analysis was proposed based on surface images.Firstly,five geometric features and seven texture features of Huizao were obtained to be the external quality indexes by digital image processing technology.Secondly,the wrinkle degree as an important index was extracted by marked watershed segmentation algorithm.According to the external quality the Huizao samples were grouped,and the moisture and total sugar content were determined through physical and chemical methods.Lastly,the moisture and total sugar content and twelve external indexes were all processed by step discriminatory analysis.Meanwhile,the regression models of moisture content with short diameter,contrast,and wrinkle degree and total sugar with wrinkle degree were established.The coefficients of the model were 0.9992 and 0.9978 respectively,and all the significance was less than 0.01,which show that the regression equation and regression coefficient effect are highly significant.The results indicate that the moisture and total sugar content of Huizao are greatly correlated with the wrinkle degree.The moisture and total sugar content are the highest when the wrinkle degree is at 2 to 3 grade,and they decrease gradually with the wrinkle degree increasing.Moisture content shows positive correlation with the size of Huizao.The results of model analysis agree well with the experimental results,which can provide valuable reference for improving Huizao grade diversity.
文摘以早中熟品种“宁秋”“嘎啦”和“鲁丽”苹果为试材,采用非靶向代谢组学(UHPLC-OE-MS)分析方法,研究了“宁秋”苹果成熟过程中(青果期S1/转色期S2/成熟期S3)代谢组分对总糖的影响,以期为苹果糖分资源的充分利用提供参考依据。结果表明:“宁秋”苹果具有优质的风味,并分析了淀粉和蔗糖代谢(starch and sucrose metabolism)、半乳糖代谢(galactose metabolism)、果糖和甘露糖代谢(fructose and mannose metabolism)初级代谢等主要KEGG途径。“宁秋”苹果果实发育过程中糖含量增加的原因与纤维生物糖、蔗糖、海藻糖、塔格糖、异亮氨酸、肌醇、葡萄糖醇、荆芥苷的合成有关。
文摘S?o Paulo State is the main sugar cane producer and these agricultural activities are carried out in predominantly sandy soils, which require large amounts of phosphate fertilizers and amendments. This work evaluated the fertilizer-effect on the Al, Ba, Fe, Mn and Ni released in a watershed with influence of sugar cane crops in the S?o Paulo State, Brazil, namely the Monjolo Grande Stream basin. Five surface water sampling campaigns were carried out at the mouth of Monjolo Grande Stream in February, April, June, September and November 2010, characterizing the following parameters: discharge, pH, temperature, electric conductivity, dissolved oxygen and total and dissolved concentrations of Al, Ba, Fe, Mn and Ni. Approximately 99% of Al and Fe are transported annually in association with suspended sediments carried to the Monjolo Grande Stream by sheet erosion. The results also demonstrated that the increasing Al, Ba, Fe and Mn concentrations dissolved in the waters of the Monjolo Grande Stream basin in the wet season are associated to phosphate fertilizers and amendments that are used extensively in agrichemical activities. However, with the current application rates, there has been no increase in the dissolved concentrations of these metals at levels that could pose risks to human health.
文摘To investigate the differences in physical and chemical indicators of tobacco stems from different parts of the‘Honghuadajinyuan’variety in the Dali tobacco-growing area,a comparative analysis of these indicators was conducted.The results showed that in terms of physical indicators,the tobacco stem length and content in middle part were significantly higher than those in other parts;the filling value of cut stems in upper part was significantly better than that in the middle and lower parts.In terms of chemical compositions,the content of total sugar and reducing sugar in middle part were the highest;the content of nicotine,total chlorine,and chlorine in upper part were the highest;the difference between total sugar and reducing sugar,sugar-to-nicotine ratio,nitrogen-to-nicotine ratio,and potassium-to-chlorine ratio in middle part were the best;and the potassium content in lower part was significantly higher than that in other parts.Correlation analysis showed that equilibrium moisture content was significantly positively correlated with total nitrogen content.Among them,equilibrium moisture content in upper part was positively correlated with nicotine content,and equilibrium moisture content in middle part was positively correlated with potassium and chlorine content.In addition,the filling value of cut stems in lower part was positively correlated with reducing sugar and total nitrogen content,while the filling value of cut stems in all parts was negatively correlated with the difference between total sugar and reducing sugar,sugar-to-nicotine ratio,and nitrogen-to-nicotine ratio.
