EFFECT OF SOAKING AND GERMINATION ON NUTRIENT AND ANTINUTRIENT CONTENTS OF FENUGREEK (TRIGONELLA FOENUM GRAECUM L.)

Fenugreek seeds (raw, soaked and germinated) were analyzed for their chemical composition. Raw fenugreek seeds contained higher amount of dietary fiber 46.50% followed by 42.12% in soaked seeds and 32.50% in germinated seeds. Soaking reduced the level of total soluble sugars, reducing sugars, nonreducing sugars, dietary fiber and improved the protein and starch digestibility and availability of minerals. Germinated fenugreek seeds had significantly higher contents of total protein (29%) and total lysine (6.48 g/100 g protein) compared to unprocessed seeds. Germination decreased dietary fiber and starch thereby raising the level of sugars. In vitro starch and protein digestibility and availability of Ca, Fe and Zn were also increased appreciably due to reduction in antinutrient contents (phytic acid and polyphenols) after 48 h germination.     

山楂提取物对D-半乳糖致衰小鼠抗氧化系统的影响

探讨山楂提取物对D-半乳糖致衰小鼠抗氧化系统的影响.选用Babl/C小鼠,在注射D-半乳糖的同时,灌胃低、中、高3种不同剂量的山楂提取物,6周后测定小鼠血清中超氧化物歧化酶(SOD)的活性,以及肝组织中SOD、谷胱甘肽过氧化物酶(GSH-Px)、过氧化氢酶(CAT)的活性.与衰老模型对照组相比,灌胃山楂提取物中、高剂量组的小鼠血清SOD、肝组织CAT活性显著升高(P<0.01),肝组织SOD、GSH-Px活性也有明显升高(P<0.05).     

紫苏中天然抗氧化物质的提取及增效作用的研究

采用不同溶剂,从唇形科植物紫苏茎叶中制得各种提取物,用烘箱法测定它们在色拉油、菜油中的抗氧化性,并与茶多酚、ＶＥ比较。实验表明,体积比为８：２的乙醇与碱水混合物的提取物的得率最高,抗氧化性能优于其它提取物,将此提取物经上柱处理后,其抗氧化性比前者更好,且优于茶多酚,与ＶＥ相近。当达到最佳抗氧化效果时,其最小使用量为０．０７％,柠檬酸对其有很好的增效作用。初步鉴定其活性成分为酚类,黄酮类化合物。     

蜂王浆的抗氧化药理作用及深加工产业化前景

蜂王浆被认定为可供人类服用的纯天然胎儿级食品,对人类有极强的营养保健功能和医疗作用.综述了机体衰老的原因、蜂王浆清除自由基的机理、蜂王浆抗氧化的研究,同时对蜂王浆的深加工及产业化发展前景进行了讨论.     

大枣多糖的分离及抗氧化性研究

研究大枣粗多糖的分离和多糖对自由基O2·和·OH的抗氧化性.结果表明,在试验条件范围内大枣多糖对AP-TEMED体系法产生的O2·的清除率达19.7%;对H2O2/Fe体系法所产生的.OH的清除率达30.05%.抑制油脂过氧化值的能力比PG稍低,比BHT高.试验显示,大枣多糖有很强的抗氧化性,值得深入研究其生理功能和开发功能产品.