大曲在柿子酒生产中的应用

采用正交试验筛选大曲法取柿子汁的最佳工艺,并对柿子酒的不同发酵工艺进行比较.结果表明,大曲加量6%、发酵温度45℃、时间4 h时,大曲法可提高柿子出汁率.对原料采用带皮渣发酵7 d后分离皮渣,以低于23℃低温酿造出的柿子酒,酒精度12%vol～14%vol,酸度0.4～0.6 g/100 mL,单宁＜0.03g/100 mL,酒色呈黄褐色、晶莹透明、酒香幽雅,具有柿子酒固有香气,酒体完整.     

Uptake and recovery of gold by immobilized persimmon tannin

Some attempts were made to recover gold from aqueous systems using immobilized persimmon tannin. This adsorbent adsorbed gold from solutions containing hydrogen tetrachloroaurate(III) with high efficiency, whereas there was minimal adsorption from solutions containing gold(I) sodium thiomalate and sodium dicyanoaurate(I). The adsorption of gold was rapid, and was affected by the pH of the solution, temperature, external gold concentration and amount of adsorbent. Adsorbed gold was easily desorbed with 1 mol dm^?3 thiourea solution, indicating that immobilized persimmon tannin can be repeatedly re-used for the recovery of gold using adsorption-desorption cycles.     

柿产业存在的问题及发展对策

柿树是我国主栽果树种类之一,栽培历史悠久．从柿子品种资源丰富,栽培管理容易,市场需求大和产品品种多样等方面分析了我国发展柿产业的优势．通过对我国柿树生产、保鲜加工技术和营销方面所存在问题的研究,提出发展柿产业相应的对策：1）调整品种结构,培育和引进优良品种,普及栽培技术;2）加强柿贮藏保鲜和加工技术的研究;3）合理布局,发挥地域优势,发展特色产业链;4）建立服务体系,完善营销渠道．     

柿染工艺在现代休闲服中的应用研究

以保护和传承柿染工艺为宗旨,将柿染应用于现代休闲服的设计中。通过追溯柿染的历史和发展现状,分析了其工艺特性,并从色彩、图案、“绿色设计”和环保理念探讨了柿染工艺应用于休闲服的可行性,分析了其在休闲服中的应用价值与前景。柿染与休闲服装的结合是传统工艺与现代设计的结合,亦是对传统手工艺继承和创新路径的探索。     

磨盘柿叶总黄酮的提取研究

采用乙醇法和半仿生法提取磨盘柿叶总黄酮,乙醇法最佳提取工艺:70%乙醇为溶剂,固液比为1∶10,回流时间为1h,提取温度为70℃。半仿生法最佳提取工艺:提取温度80℃,时间1h,固液比为1∶20。     

Polyphenol oxidase properties,anti-urease,and anti-acetylcholinesterase activity of Diospyros lotus L. (Plum Persimmon)

Diospyros lotus fruit polyphenol oxidase was purified using affinity chromatography, resulting in a 15-fold enrichment in specific activity. The purified enzyme, having 16.5 kDa molecular weight on sodium dodecyl sulfate-polyacrylamide gel electrophoresis, exhibited the highest activity toward 4-methylcatechol. Maximum diphenolase activity was reached at pH 7.0 and 60°C in the presence of 4-methylcatechol. K_m and V_max values were calculated as 3.8 mM and 1250 U/mg protein, respectively. Ascorbic acid was a promising inhibitor with an IC₅₀ value of 0.121 µM. The activity of the purified enzyme was stimulated by Fe²⁺, Sr²⁺, Zn²⁺, and K⁺ and deeply inhibited by Hg²⁺, at 1 mM final concentration. Aqueous extract of Diospyros lotus L. fruit showed strong substantial urease and acetylcholinesterase inhibition, with IC₅₀ values of 1.55 ± 0.05 and 16.75 ± 0.11 mg/mL, respectively.     

甜柿的营养及功能特性

介绍了甜柿的营养成分及功能特性，叙述了柿子的开发利用现状。