The objective of the present study is to examine how different concentrations of polyvinyl acetate(PVAc)coating(2.5%,5.0%,7.5%,10.0%,and 12.5%)affect the quality of lemons during storage at(27±2)℃,with the aim o...The objective of the present study is to examine how different concentrations of polyvinyl acetate(PVAc)coating(2.5%,5.0%,7.5%,10.0%,and 12.5%)affect the quality of lemons during storage at(27±2)℃,with the aim of extending their shelf life.Lemons are known for being a rich source of citric acid,ascorbic acid,and dietary fiber.During the study,the coated lemons were regularly assessed for various parameters such as weight loss,respiration rate,firmness,decay incidence,total soluble solids,pH,ascorbic acid,and juice content.the results revealed that lemons coated with 10.0%and 12.5%concentrations of PVAc exhibited a significant(P<0.05)impact in reducing the respiration rate,ethylene production rate,weight loss,and maintaining firmness compared to the control sample.Furthermore,the study also investigated the potential acute toxicological and histological effects of the PVAc(12.5%)coated sample on mice.the results indicated that there were no harmful or lethal effects observed in the experimental mice.therefore,the PVAc coating at concentrations of 10.0%and 12.5%proves to be beneficial in preserving the natural color of lemons and minimizing senescence during storage at(27±2)℃.展开更多
Response surface methodology was used to investigate the influence of high shear homogenization speed(A:3000-12000 r/min)and processing time(B:30-120 min)on bael fruit pulp quality parameters.The experimental results ...Response surface methodology was used to investigate the influence of high shear homogenization speed(A:3000-12000 r/min)and processing time(B:30-120 min)on bael fruit pulp quality parameters.The experimental results were best fitted in the suggested quadratic model to delineate and envision the responses in terms of color(values of L^(*),meaning brightness to blackness,1oo-0;a^(*),meaning green-a^(*)to red+a^(*);and b^(*),meaning blue-b^(*)to yellow+b),total soluble solids,ascorbic acid,viscosity,andβ-carotene content with the highest coefficients of determination(R2)ranging from 0.80 to 0.99.Significant(P<0.05)change in the L^(*)value,total soluble solids,ascorbic acid,andβ-carotene content was found with change in homogenization speed.The interaction effect of homogenization showed a significant difference in a^(*)value and total soluble solid content of the pulp.The best homogenization conditions were determined via multiple response optimization as 10682 r/min speed and 43.18 min process time.The quality parameters of the pulp at optimized conditions were observed as L^(*)15.35,a^(*)4.51,b^(*)10.25,ascorbic acid 18.64 mg/100 g,viscosity 5349 cP,andβ-carotene 4.14μg/100 g.In addition,total phenolic content,flavonoid content,and antioxidant content of homogenized bael fruit pulp was found to significantly(P<0.05)increase from(83.76±1.24)to(119.21±1.35)mg gallic acid equivalent(GAE)/100 mL,(147.39±0.69)to(156.10±1.11)mg quercetin equivalent(QE)/100 mL,and(41.77%±0.60%)to(66.53%±0.41%),respectively.Consequently,this strategy could be used in fruit processing industries to process highly fibrous fruits and nonuniform-textured fruit pulptoavoid sedimentation whileretaining functionality.展开更多
文摘The objective of the present study is to examine how different concentrations of polyvinyl acetate(PVAc)coating(2.5%,5.0%,7.5%,10.0%,and 12.5%)affect the quality of lemons during storage at(27±2)℃,with the aim of extending their shelf life.Lemons are known for being a rich source of citric acid,ascorbic acid,and dietary fiber.During the study,the coated lemons were regularly assessed for various parameters such as weight loss,respiration rate,firmness,decay incidence,total soluble solids,pH,ascorbic acid,and juice content.the results revealed that lemons coated with 10.0%and 12.5%concentrations of PVAc exhibited a significant(P<0.05)impact in reducing the respiration rate,ethylene production rate,weight loss,and maintaining firmness compared to the control sample.Furthermore,the study also investigated the potential acute toxicological and histological effects of the PVAc(12.5%)coated sample on mice.the results indicated that there were no harmful or lethal effects observed in the experimental mice.therefore,the PVAc coating at concentrations of 10.0%and 12.5%proves to be beneficial in preserving the natural color of lemons and minimizing senescence during storage at(27±2)℃.
基金funded by the National Institute of Food Technology Entrepreneurship and Management (NIFTEM),India (No.Ph.D./17-18/7/175).
文摘Response surface methodology was used to investigate the influence of high shear homogenization speed(A:3000-12000 r/min)and processing time(B:30-120 min)on bael fruit pulp quality parameters.The experimental results were best fitted in the suggested quadratic model to delineate and envision the responses in terms of color(values of L^(*),meaning brightness to blackness,1oo-0;a^(*),meaning green-a^(*)to red+a^(*);and b^(*),meaning blue-b^(*)to yellow+b),total soluble solids,ascorbic acid,viscosity,andβ-carotene content with the highest coefficients of determination(R2)ranging from 0.80 to 0.99.Significant(P<0.05)change in the L^(*)value,total soluble solids,ascorbic acid,andβ-carotene content was found with change in homogenization speed.The interaction effect of homogenization showed a significant difference in a^(*)value and total soluble solid content of the pulp.The best homogenization conditions were determined via multiple response optimization as 10682 r/min speed and 43.18 min process time.The quality parameters of the pulp at optimized conditions were observed as L^(*)15.35,a^(*)4.51,b^(*)10.25,ascorbic acid 18.64 mg/100 g,viscosity 5349 cP,andβ-carotene 4.14μg/100 g.In addition,total phenolic content,flavonoid content,and antioxidant content of homogenized bael fruit pulp was found to significantly(P<0.05)increase from(83.76±1.24)to(119.21±1.35)mg gallic acid equivalent(GAE)/100 mL,(147.39±0.69)to(156.10±1.11)mg quercetin equivalent(QE)/100 mL,and(41.77%±0.60%)to(66.53%±0.41%),respectively.Consequently,this strategy could be used in fruit processing industries to process highly fibrous fruits and nonuniform-textured fruit pulptoavoid sedimentation whileretaining functionality.
