[Objectives]This study was conducted to investigate the effect of compound fresh-keeping liquid on the browning and quality of fresh-cut yam during the cold chain process.[Methods]Under the simulated cold chain condit...[Objectives]This study was conducted to investigate the effect of compound fresh-keeping liquid on the browning and quality of fresh-cut yam during the cold chain process.[Methods]Under the simulated cold chain condition of 4℃,a uniform design(U6*(64))experiment was carried out to optimize the compound preservative formula,and a better compound preservative formula was obtained using the regression equation.[Results]The compound preservative formula was:AA 0.25%,CA 0.5%,Nisin 0.09%,GSH 0.15%.The compound fresh-keeping liquid effectively delayed the browning of fresh-cut yam and the accumulation of MDA,maintained the content of TSS,inhibited the activity of PAL and delayed the appearance of the maximum activity of POD and POD.[Conclusions]This study provides technical support for the actual extension of the shelf life of fresh-cut yam.展开更多
Modifed starch flms are gaining attention as biodegradable and sustainable materials in the food packaging industry.However,their inherent properties,including their brittleness and low antimicrobial and antioxidant c...Modifed starch flms are gaining attention as biodegradable and sustainable materials in the food packaging industry.However,their inherent properties,including their brittleness and low antimicrobial and antioxidant capacities,limit their extensive application.To address these shortcomings,in this study,a composite flm was developed using potato-modifed starch(PMS)as the base material,enhanced with konjac glucomannan(KGM),Pleurotus citrinopileatus polysaccharide(PCP),and nano titanium dioxide(nano TiO_(2)).Additionally,PCP and nano TiO_(2),which are bioactive components,were incorporated to improve the functional properties of the flms,promoting their application in food preservation.The optimal composition of the composite flms was determined through a fuzzy comprehensive evaluation,and the best performance was achieved with 10 g/L of PCP and 1.5 g/L of nano TiO_(2).These composite flms exhibited high mechanical strength,antimicrobial capacity,and antioxidant capacity while being noncytotoxic.The practical effcacy of the composite flms was verifed by applying them to preserve fresh-cut yams at room temperature,where they effectively delayed spoilage and maintained yam quality.This study demonstrates that PMS/KGM/PCP/nano TiO2 composite flms can signifcantly enhance the shelf life of fresh produce,providing a viable route for eco-friendly food preservation.展开更多
The effects of yam powder(YP)on the functional properties of wheat flour noodles were investigated to improve the nutritional value of noodles and provide a scientific basis for YP application in flour products.Using ...The effects of yam powder(YP)on the functional properties of wheat flour noodles were investigated to improve the nutritional value of noodles and provide a scientific basis for YP application in flour products.Using wheat flour as the main ingredient,the effects of different YP substitution ratios(0,5%,10%,15%,20%,and 25%)on polyphenolic content,2,2-diphenyl-1-picrylhydrazyl(DPPH)free radical scavenging rate,and starch digestibility of the prepared noodles were analyzed in vitro.Additionally,the effects of YP water-soluble extracts,wheat flour noodles,and YP-enriched noodles(hereinafter,YP noodles)on inflammatory factors in vascular smooth muscle cells(VSMCs)treated by H_(2)O_(2)(100μM)were investigated.The results showed that YP had a substantial effect on polyphenolic content and DPPH free radical scavenging rate of wheat flour noodles,significantly increasing both values compared with those of the control group(P<0.05).The polyphenolic content reached a maximum of 2.17 mg/g in noodles with 20%YP substitution,whereas DPPH free radical scavenging rate reached a maximum of 42.10%in noodles with 25%YP substitution.With an increase in YP amount,both starch hydrolysis rate and rapidly digestible starch content of the noodles decreased gradually,whereas resistant starch content increased significantly.Moreover,50,100,and 200μg/mL of water-soluble YP and YP noodle extracts had no significant effect on the viability of VSMCs,and high concentrations of YP and YP noodle extracts resulted in cell death.Both YP and noodle extracts also reduced the secretion levels of inflammatory factors IL-6 and TNF-α in H_(2)O_(2)-treated VSMCs.Overall,YP addition reduced starch digestibility,increased antioxidative activity,and effectively improved functional quality of noodles.This study provides reference for the research and development of health-benefiting anti-inflammatory foods.展开更多
Bionanocomposite film is produced from renewable and biodegradable natural resources.Although elephant foot yam(EFY)starch(Amorphophallus paeoniifolius)is a promising polymer for bionanocomposite film,the native hydro...Bionanocomposite film is produced from renewable and biodegradable natural resources.Although elephant foot yam(EFY)starch(Amorphophallus paeoniifolius)is a promising polymer for bionanocomposite film,the native hydrophilic properties influence the overall performance characteristics.Incorporating virgin coconut oil(VCO)and monoglyceride as hydrophobic components can improve mechanical properties and reduce permeability while increasing the hydrophobicity of the composite.Therefore,this study aimed to determine the effect of adding VCO and monoglyceride on EFY starch-nanocrystalline film at 3 and 5 wt%concentrations.Experimental tests were conducted to evaluate the physical and mechanical properties,water vapor transmission rate(WVTR),morphology,functional groups,biodegradability,and hydrophobicity.The results showed that the addition of 5 wt%monoglyceride produced optimum outcomes by reducing the WVTR to 3.99 g.m^(−2).h^(−1),increasing the thickness to 0.134 mm and decreasing the solubility to 36.04%.The Universal Testing Machine(UTM)tests showed an elongation of 74.59%,showing excellent elasticity.The Scanning Electron Microscope(SEM)test showed the bonds formed with starch granules,leading to a flatter surface.The Fourier Transform Infrared Spectroscopy(FTIR)test also showed an increase in the wavelength of the C=O groups and a decrease in the O-H groups.The contact angle test processed using image-J showed high hydrophobicity,consequently reducing the biodegradability of bionanocomposite film by the Aspergillus niger fungal degradation test.In conclusion,this study successfully developed bionanocomposite film with enhanced hydrophobicity,elasticity,and barrier properties,highly suitable for protecting food from humid air.The composite holds great potential for further development as an environmentally friendly packaging solution.展开更多
The polysaccharides in yam bulbils were extracted, and their antioxidant activity and hypoglycemic effect in diabetic mice were discussed. The results showed that the antioxidant activity of polysaccharides in yam bul...The polysaccharides in yam bulbils were extracted, and their antioxidant activity and hypoglycemic effect in diabetic mice were discussed. The results showed that the antioxidant activity of polysaccharides in yam bulbils was signifi- cantly enhanced with the increase of concentration; they showed a strong scaveng- ing ability against DPPH. and .OH, and the scavenging ability was dose dependent to some extent; the scavenging rates reached 91.15% and 89.06% respectively when the dose reached 4.0 mg/ml; the polysaccharides in yam bulbils significantly educed the blood glucose in model rice, and the hypoglycemic effect of large-dose polysaccharides was more obvious. The polysaccharides in yam bulbils has good antioxidant activity and hypoglycemic effect, which provides a new source for devel- opment of safe and natural food antioxidants and blood sugar-lowering agents.展开更多
[Objective] This study was to explore the effect of purple yam on the nutritional and physiological functions of rats.[Method] Forty SD rats were randomly divided into four groups with ten rats in each group which wer...[Objective] This study was to explore the effect of purple yam on the nutritional and physiological functions of rats.[Method] Forty SD rats were randomly divided into four groups with ten rats in each group which were reared with artificial semisynthetic feed added with 10% steamed yam powder.The four groups,the casein（CK） group which was used as the control,the purple yam（PY） group,the Tiegun yam（TY） group and common Huai yam（HY） group,were supplied with feed of equal content of energy,protein and fat.The rats were pair-fed for 56 days to observe changes of relevant nutritional and physiological indices.[Result] There were no significant differences of body weight,food conversion rate and organ indices between rats in PY group and CK group.Mean corpuscular hemoglobin in PY group was significantly lower than that in CK group;hemoglobin showed no significant difference with that in CK group;eosnophils was lower than that in CK group.Low density lipoprotein-cholesterol,total cholesterol and atherogenic index in PY group were lower than that in the other three groups;anti-atherogenic index was the highest among the four groups,while showing no significant difference;triglyceride content was lower than that in CK group.Among the antioxidant indices,the activity of catalase and superoxide dismutase were higher than that in CK group,while malondialdehyde content was lower than that in CK group.[Conclusion] Purple yam showed the trend of reducing the content of blood glucose,total cholesterol,low density lipoprotein-cholesterol,triglyceride,malondialdehyde,and raising the activity of glutathione peroxidase,superoxide dismutase and catalase,thus having certain antioxidative function.展开更多
The new bulk purple yam variety Suyu 2,which had high quality,efficiency and was suitable for production in a highly mechanized cultivation,was bred by special and was suitable for whole-course mechanized cultivation....The new bulk purple yam variety Suyu 2,which had high quality,efficiency and was suitable for production in a highly mechanized cultivation,was bred by special and was suitable for whole-course mechanized cultivation.Integrated with agricultural machinery and agricultural trait,four kinds of machines produced by two factories from Jiangsu and Shandong could complete 10 kinds of main production processes,including rotary tillage,ridging,sowing,intertillage,topdressing,drug delivery,weeding,hilling,vine cutting and harvest.The work efficiency of single machine was 4-5 hm^2/d,and the production pattern got the cost saving and effectiveness increasing in the main yam producing area.The benefit reached over RMB 37500 yuan/hm^2 in special vegetable area.It was simple,feasible and easy to popularize the mechanization cultivation technique.展开更多
本研究以‘毕克齐’和‘大和长芋’山药块茎为试验材料,通过RACE技术克隆山药BAM1基因,并进行生物信息学分析与亚细胞定位;分析BAM1在山药块茎不同发育时期的表达模式;筛选其互作蛋白,并研究其在低温、干旱和盐胁迫下的表达特征。结果表...本研究以‘毕克齐’和‘大和长芋’山药块茎为试验材料,通过RACE技术克隆山药BAM1基因,并进行生物信息学分析与亚细胞定位;分析BAM1在山药块茎不同发育时期的表达模式;筛选其互作蛋白,并研究其在低温、干旱和盐胁迫下的表达特征。结果表明,山药BAM1基因全长2066 bp,有BAMs家族基因的保守结构域Glyco_hydro_14,与几内亚薯蓣亲缘关系较近;该基因编码蛋白定位于细胞膜;在2个山药品种中,BAM1基因的表达量均在块茎膨大的前期和后期处于较高水平;通过酵母双杂交筛选出17个与其互作的蛋白,表达分析结果表明BAM1基因及其互作基因GEM-like Protein 5、TIFY10a-like和CXXS1响应植物的低温、干旱和盐胁迫。展开更多
For traditional cultivation of Chinese yam, it is necessary to dig a deep trench duringsowing and harvest, wasting labor and time, and Chinese yam requires good quality of cultivated land, causing serious impact on th...For traditional cultivation of Chinese yam, it is necessary to dig a deep trench duringsowing and harvest, wasting labor and time, and Chinese yam requires good quality of cultivated land, causing serious impact on the development of yam industry due to the competition with food production. Yam no-tillage ecological cul- ture techniques, combined with advantage of yam directional tuberization, could en- able the cultivation of yam inlow-production field, barren hills and sloping field, forest land and other non-staple food land and thus could promote farmers＇ income as well as improving the ecological environment.展开更多
基金Natural Science Foundation of Guangxi(2017GXNSFAA198082)Guangxi Aquatic Vegetable Fresh-keeping and Processing Engineering Research Center Project(GXSSSCBXYJGZX1912)。
文摘[Objectives]This study was conducted to investigate the effect of compound fresh-keeping liquid on the browning and quality of fresh-cut yam during the cold chain process.[Methods]Under the simulated cold chain condition of 4℃,a uniform design(U6*(64))experiment was carried out to optimize the compound preservative formula,and a better compound preservative formula was obtained using the regression equation.[Results]The compound preservative formula was:AA 0.25%,CA 0.5%,Nisin 0.09%,GSH 0.15%.The compound fresh-keeping liquid effectively delayed the browning of fresh-cut yam and the accumulation of MDA,maintained the content of TSS,inhibited the activity of PAL and delayed the appearance of the maximum activity of POD and POD.[Conclusions]This study provides technical support for the actual extension of the shelf life of fresh-cut yam.
基金supported by the Shenyang Medical College Scientifc Research Innovation Fund(Nos.20182033 and 20191038),China。
文摘Modifed starch flms are gaining attention as biodegradable and sustainable materials in the food packaging industry.However,their inherent properties,including their brittleness and low antimicrobial and antioxidant capacities,limit their extensive application.To address these shortcomings,in this study,a composite flm was developed using potato-modifed starch(PMS)as the base material,enhanced with konjac glucomannan(KGM),Pleurotus citrinopileatus polysaccharide(PCP),and nano titanium dioxide(nano TiO_(2)).Additionally,PCP and nano TiO_(2),which are bioactive components,were incorporated to improve the functional properties of the flms,promoting their application in food preservation.The optimal composition of the composite flms was determined through a fuzzy comprehensive evaluation,and the best performance was achieved with 10 g/L of PCP and 1.5 g/L of nano TiO_(2).These composite flms exhibited high mechanical strength,antimicrobial capacity,and antioxidant capacity while being noncytotoxic.The practical effcacy of the composite flms was verifed by applying them to preserve fresh-cut yams at room temperature,where they effectively delayed spoilage and maintained yam quality.This study demonstrates that PMS/KGM/PCP/nano TiO2 composite flms can signifcantly enhance the shelf life of fresh produce,providing a viable route for eco-friendly food preservation.
基金financial support of the Henan Provincial Science and Technology Research Project(Project No.242102310322)Shangqiu Product Quality Inspection and Testing Center(Project No.2024001).
文摘The effects of yam powder(YP)on the functional properties of wheat flour noodles were investigated to improve the nutritional value of noodles and provide a scientific basis for YP application in flour products.Using wheat flour as the main ingredient,the effects of different YP substitution ratios(0,5%,10%,15%,20%,and 25%)on polyphenolic content,2,2-diphenyl-1-picrylhydrazyl(DPPH)free radical scavenging rate,and starch digestibility of the prepared noodles were analyzed in vitro.Additionally,the effects of YP water-soluble extracts,wheat flour noodles,and YP-enriched noodles(hereinafter,YP noodles)on inflammatory factors in vascular smooth muscle cells(VSMCs)treated by H_(2)O_(2)(100μM)were investigated.The results showed that YP had a substantial effect on polyphenolic content and DPPH free radical scavenging rate of wheat flour noodles,significantly increasing both values compared with those of the control group(P<0.05).The polyphenolic content reached a maximum of 2.17 mg/g in noodles with 20%YP substitution,whereas DPPH free radical scavenging rate reached a maximum of 42.10%in noodles with 25%YP substitution.With an increase in YP amount,both starch hydrolysis rate and rapidly digestible starch content of the noodles decreased gradually,whereas resistant starch content increased significantly.Moreover,50,100,and 200μg/mL of water-soluble YP and YP noodle extracts had no significant effect on the viability of VSMCs,and high concentrations of YP and YP noodle extracts resulted in cell death.Both YP and noodle extracts also reduced the secretion levels of inflammatory factors IL-6 and TNF-α in H_(2)O_(2)-treated VSMCs.Overall,YP addition reduced starch digestibility,increased antioxidative activity,and effectively improved functional quality of noodles.This study provides reference for the research and development of health-benefiting anti-inflammatory foods.
基金funded by an Internal Research Grant of Universitas Padjadjaran,Bandung,Indonesia.
文摘Bionanocomposite film is produced from renewable and biodegradable natural resources.Although elephant foot yam(EFY)starch(Amorphophallus paeoniifolius)is a promising polymer for bionanocomposite film,the native hydrophilic properties influence the overall performance characteristics.Incorporating virgin coconut oil(VCO)and monoglyceride as hydrophobic components can improve mechanical properties and reduce permeability while increasing the hydrophobicity of the composite.Therefore,this study aimed to determine the effect of adding VCO and monoglyceride on EFY starch-nanocrystalline film at 3 and 5 wt%concentrations.Experimental tests were conducted to evaluate the physical and mechanical properties,water vapor transmission rate(WVTR),morphology,functional groups,biodegradability,and hydrophobicity.The results showed that the addition of 5 wt%monoglyceride produced optimum outcomes by reducing the WVTR to 3.99 g.m^(−2).h^(−1),increasing the thickness to 0.134 mm and decreasing the solubility to 36.04%.The Universal Testing Machine(UTM)tests showed an elongation of 74.59%,showing excellent elasticity.The Scanning Electron Microscope(SEM)test showed the bonds formed with starch granules,leading to a flatter surface.The Fourier Transform Infrared Spectroscopy(FTIR)test also showed an increase in the wavelength of the C=O groups and a decrease in the O-H groups.The contact angle test processed using image-J showed high hydrophobicity,consequently reducing the biodegradability of bionanocomposite film by the Aspergillus niger fungal degradation test.In conclusion,this study successfully developed bionanocomposite film with enhanced hydrophobicity,elasticity,and barrier properties,highly suitable for protecting food from humid air.The composite holds great potential for further development as an environmentally friendly packaging solution.
基金Supported by Key Project of Huainan Normal College(2011LK76zd)Youth Fund of Huainan Normal College(2010LK13)~~
文摘The polysaccharides in yam bulbils were extracted, and their antioxidant activity and hypoglycemic effect in diabetic mice were discussed. The results showed that the antioxidant activity of polysaccharides in yam bulbils was signifi- cantly enhanced with the increase of concentration; they showed a strong scaveng- ing ability against DPPH. and .OH, and the scavenging ability was dose dependent to some extent; the scavenging rates reached 91.15% and 89.06% respectively when the dose reached 4.0 mg/ml; the polysaccharides in yam bulbils significantly educed the blood glucose in model rice, and the hypoglycemic effect of large-dose polysaccharides was more obvious. The polysaccharides in yam bulbils has good antioxidant activity and hypoglycemic effect, which provides a new source for devel- opment of safe and natural food antioxidants and blood sugar-lowering agents.
基金Supported by the Special Fund for Construction of Scientific and Technological Innovation Ability of BAAFS(KJCX201101010-22)~~
文摘[Objective] This study was to explore the effect of purple yam on the nutritional and physiological functions of rats.[Method] Forty SD rats were randomly divided into four groups with ten rats in each group which were reared with artificial semisynthetic feed added with 10% steamed yam powder.The four groups,the casein（CK） group which was used as the control,the purple yam（PY） group,the Tiegun yam（TY） group and common Huai yam（HY） group,were supplied with feed of equal content of energy,protein and fat.The rats were pair-fed for 56 days to observe changes of relevant nutritional and physiological indices.[Result] There were no significant differences of body weight,food conversion rate and organ indices between rats in PY group and CK group.Mean corpuscular hemoglobin in PY group was significantly lower than that in CK group;hemoglobin showed no significant difference with that in CK group;eosnophils was lower than that in CK group.Low density lipoprotein-cholesterol,total cholesterol and atherogenic index in PY group were lower than that in the other three groups;anti-atherogenic index was the highest among the four groups,while showing no significant difference;triglyceride content was lower than that in CK group.Among the antioxidant indices,the activity of catalase and superoxide dismutase were higher than that in CK group,while malondialdehyde content was lower than that in CK group.[Conclusion] Purple yam showed the trend of reducing the content of blood glucose,total cholesterol,low density lipoprotein-cholesterol,triglyceride,malondialdehyde,and raising the activity of glutathione peroxidase,superoxide dismutase and catalase,thus having certain antioxidative function.
文摘The new bulk purple yam variety Suyu 2,which had high quality,efficiency and was suitable for production in a highly mechanized cultivation,was bred by special and was suitable for whole-course mechanized cultivation.Integrated with agricultural machinery and agricultural trait,four kinds of machines produced by two factories from Jiangsu and Shandong could complete 10 kinds of main production processes,including rotary tillage,ridging,sowing,intertillage,topdressing,drug delivery,weeding,hilling,vine cutting and harvest.The work efficiency of single machine was 4-5 hm^2/d,and the production pattern got the cost saving and effectiveness increasing in the main yam producing area.The benefit reached over RMB 37500 yuan/hm^2 in special vegetable area.It was simple,feasible and easy to popularize the mechanization cultivation technique.
文摘本研究以‘毕克齐’和‘大和长芋’山药块茎为试验材料,通过RACE技术克隆山药BAM1基因,并进行生物信息学分析与亚细胞定位;分析BAM1在山药块茎不同发育时期的表达模式;筛选其互作蛋白,并研究其在低温、干旱和盐胁迫下的表达特征。结果表明,山药BAM1基因全长2066 bp,有BAMs家族基因的保守结构域Glyco_hydro_14,与几内亚薯蓣亲缘关系较近;该基因编码蛋白定位于细胞膜;在2个山药品种中,BAM1基因的表达量均在块茎膨大的前期和后期处于较高水平;通过酵母双杂交筛选出17个与其互作的蛋白,表达分析结果表明BAM1基因及其互作基因GEM-like Protein 5、TIFY10a-like和CXXS1响应植物的低温、干旱和盐胁迫。
基金Supported by National Scientific and Technological Special Program(200903022)Science and Technology Development Fund of Guangxi Academy of Agricultural Sciences(2015JM11)~~
文摘For traditional cultivation of Chinese yam, it is necessary to dig a deep trench duringsowing and harvest, wasting labor and time, and Chinese yam requires good quality of cultivated land, causing serious impact on the development of yam industry due to the competition with food production. Yam no-tillage ecological cul- ture techniques, combined with advantage of yam directional tuberization, could en- able the cultivation of yam inlow-production field, barren hills and sloping field, forest land and other non-staple food land and thus could promote farmers＇ income as well as improving the ecological environment.
