In this study,the first fermentation of Fuji apple juice was carried out using Saccharomyces cerevisiae WLS21 and continued a second fermentation using S.cerevisiae HYJ1,HYJ2,PE2,and Y41 in sealed bottles after adjust...In this study,the first fermentation of Fuji apple juice was carried out using Saccharomyces cerevisiae WLS21 and continued a second fermentation using S.cerevisiae HYJ1,HYJ2,PE2,and Y41 in sealed bottles after adjusting the sugar level.The physicochemical indexes,aromas,and sensory characteristics of four sparkling ciders were analyzed.The results revealed that HYJ2 produced the highest amount of ethanol and Y41 had the highest pressure in the bottle at the end of fermentation.Y41 produced the highest citric and succinic acids and HYJ1 produced higher fumaric acid and total volatiles.HYJ1 cider had an obvious herbaceous odor,and Y41 cider had a fruity character.Sixty-seven volatiles were detected from four sparkling ciders(55 fermentative and 12 non-fermentative aromas).Esters(EEFAs and HAAs)were the main volatile aroma family produced during secondary fermentation,and terpenes contributed the most to fruity odor.Based on univariate(ANOVA)and multivariate analysis of variance(PLS-DA)screening of four cider significant variables,13 volatiles with variable predictive importance(VIP)≥1 were identified.PLSR analysis revealed that 2-methylbutyl acetate,ethyl heptanoate,2-methyl-1-butanol,nonanal,2-nonanone,β-damascenone,and linalool were potential volatile markers for OAV>1.展开更多
This paper studies the elastic deformation field in lattice-mismatched Ge-Si core-shell nanowires(NWs).Infinite wires with a cylindrical cross section under the assumption of translational symmetry are considered.The ...This paper studies the elastic deformation field in lattice-mismatched Ge-Si core-shell nanowires(NWs).Infinite wires with a cylindrical cross section under the assumption of translational symmetry are considered.The strain distributions are found by minimizing the elastic energy per unit cell using finite element method.This paper finds that the trace of the strain is discontinuous with a simple,almost piecewise variation between core and shell,whereas the individual components of the strain can exhibit complex variations.The simulation results are prerequisite of strained band structure calculation,and pave a way for further investigation of strain effect on the related transport property simulation.展开更多
基金supported by key agricultural Science and Technology project of Shaanxi Provincial(NYKJ-2019-XA),China.
文摘In this study,the first fermentation of Fuji apple juice was carried out using Saccharomyces cerevisiae WLS21 and continued a second fermentation using S.cerevisiae HYJ1,HYJ2,PE2,and Y41 in sealed bottles after adjusting the sugar level.The physicochemical indexes,aromas,and sensory characteristics of four sparkling ciders were analyzed.The results revealed that HYJ2 produced the highest amount of ethanol and Y41 had the highest pressure in the bottle at the end of fermentation.Y41 produced the highest citric and succinic acids and HYJ1 produced higher fumaric acid and total volatiles.HYJ1 cider had an obvious herbaceous odor,and Y41 cider had a fruity character.Sixty-seven volatiles were detected from four sparkling ciders(55 fermentative and 12 non-fermentative aromas).Esters(EEFAs and HAAs)were the main volatile aroma family produced during secondary fermentation,and terpenes contributed the most to fruity odor.Based on univariate(ANOVA)and multivariate analysis of variance(PLS-DA)screening of four cider significant variables,13 volatiles with variable predictive importance(VIP)≥1 were identified.PLSR analysis revealed that 2-methylbutyl acetate,ethyl heptanoate,2-methyl-1-butanol,nonanal,2-nonanone,β-damascenone,and linalool were potential volatile markers for OAV>1.
文摘This paper studies the elastic deformation field in lattice-mismatched Ge-Si core-shell nanowires(NWs).Infinite wires with a cylindrical cross section under the assumption of translational symmetry are considered.The strain distributions are found by minimizing the elastic energy per unit cell using finite element method.This paper finds that the trace of the strain is discontinuous with a simple,almost piecewise variation between core and shell,whereas the individual components of the strain can exhibit complex variations.The simulation results are prerequisite of strained band structure calculation,and pave a way for further investigation of strain effect on the related transport property simulation.
