大豆中异黄酮的组分、作用及其应用前景

介绍近年来日趋活跃的大豆异黄酮研究进展 ,包括大豆异黄酮的主要类型、化学结构 ,大豆制品中异黄酮的含量及在抗氧化、抑制肿瘤细胞生成、改善心血管功能、抗骨质疏松作用等多种生物活性 ;给出了利用HPLC等方法对大豆中异黄酮的分析测试结果     

大豆食品中蛋白质含量的测定

蛋白质是组成机体细胞的重要成份 .食品中蛋白质的多少与人体健康紧密相关 ,因而是评价食品质量高低的标准 .在日常食品中 ,大豆及其制品中的蛋白质含量较高 ,下面介绍一个简易试验 ,用来测定大豆制品中蛋白质的含量 .　　一、原理大豆蛋白质一般含有 1 7.5 %左右的氮 .设法测得大豆或大豆制品中的含氮量 ,再乘以换算系数 5 .71 (1 / 1 7.5 % ) ,就可以得出其中的蛋白质含量 .食品中的蛋白质可以跟浓硫酸作用 ,发生所谓“消化分解” ,生成的氨进一步与硫酸作用生成硫酸铵 .在“消化液”中加碱 ,可以蒸馏出游离的氨 ,用硼酸吸收蒸出的氨 ,再…     

大豆营养因子及其在食品加工中的应用

大豆营养因子包括大豆蛋白质、大豆磷脂、大豆异黄酮等。大豆低聚糖和皂甙是具有营养和抗营养双重作用的兼性因子。在食品加工中应合理应用营养因子及兼性因子的有益功能,不断造福社会。     

DTT水解大豆胰蛋白酶抑制剂的研究

大豆胰蛋白酶抑制剂（STI）可以抑制一些来源于动物或植物的蛋白酶的活力,使之降低水解蛋白质的效力,降低蛋白质的利用率。本文主要选取二巯基苏糖醇（DTT）采用分光光度法、SDS-PAGE和GPC色谱法相结合测定DTT对大豆胰蛋白酶抑制剂的水解程度进行研究。     

理想的儿童健脑食物

鲜鱼:鲜鱼含有丰富的钙、蛋白质及不饱和脂肪酸,可分解胆固醇,使脑血管通畅,是最佳儿童健脑食物。蛋黄:蛋黄含有蛋碱和蛋黄素等脑细胞所必需的营养物质,儿童多吃些蛋黄,能给大脑带来活力。牛奶:牛奶含有钙和蛋白质,可给大脑提供所需的各种氨基酸,儿童适量饮用些牛奶,也能增强大脑的活力。木耳:木耳含有脂肪、蛋白质、多糖类以及矿物质和维生素等营养成份,也是儿童补脑健脑的佳品。大豆:大豆含有蛋黄素和丰富的蛋白质等营养物质,儿童每天吃上一定数量的大豆或大豆制品,能很好地增强大脑的记忆力。香蕉:香蕉含有丰富的矿物质,并含有数量很高的…     

生物炭和内生菌促进大豆增加养分吸收和调节营养参数的叠加作用（英文）

目的:探讨提高大豆作物品质的方法。创新点:研究了生物炭和植物内生菌联合使用对大豆营养吸收和营养品质的叠加作用。方法:采用硬木生物炭和半乳糖霉菌(Galactomyces geotrichum WLL1)对大豆进行处理,按照处理方式的不同分成四组,包括对照组(无处理)、G.geotrichum处理组、生物炭处理组和生物炭与G.geotrichum联合处理组。通过对比研究生物炭和内生菌对大豆宏量营养素和微量营养素的吸收和同化的作用,并观察其对功能性氨基酸、异黄酮、脂肪酸组成、总糖含量、总酚含量和1,1-二苯基苦基苯肼(DPPH)自由基清除能力的影响。结论:研究结果发现生物炭和内生菌单独或联合处理均能增加大豆养分的吸收,促进功能性氨基酸的合成,并提升大豆营养品质。同时,生物炭是一种额外的营养源,而内生菌能产生生物刺激效应,两者联合使用具有叠加作用,比单独使用更加有效。     

小鼠骨髓细胞染色体G带制片技术的探讨

为了能获得更好的小鼠骨髓细胞染色体G带标本,对小鼠骨髓细胞染色体G带制片方法进行了研究。用低渗法制备经腹腔注射秋水仙素溶液预处理的小鼠骨髓细胞染色体玻片标本,以不同浓度、不同时间的胰蛋白酶液处理玻片标本,通过显微镜分析染色体G带制片效果。结果表明:0.05%胰蛋白酶液、处理时间24~26 s中期分裂相的染色体G带最清晰;而过低浓度胰蛋白酶液(0.025%)处理时间长达120 s或过高浓度胰蛋白酶液(0.125%和0.25%)处理时间低至5 s,都不能得到G带带纹。结论:小白鼠骨髓细胞染色体G带标本的制作,主要受胰蛋白酶浓度及消化时间因素的影响,0.05%胰蛋白酶液与处理时间成一定的线性关系,但过高浓度或过低浓度很难找到G带与处理时间的变化规律,此外,G带还受染色体预处理、低渗等的影响。     

豆类食物——富含蛋白质的“植物肉”

豆类食物营养丰富,味道鲜美,烹制方便,非常适合小儿食用。豆类食物中的大豆(黄豆)被誉为"营养之花""豆中之王"。大豆中含有     

浅议大豆的活性因子及其生理功能

大豆的营养价值已众所周知,随着科技的发展,大豆非营养活性因子的生理功能研究也越加深入,本文对大豆多肽、大豆异黄酮、大豆低聚糖、大豆皂苷、大豆卵磷脂、大豆植物甾醇、大豆膳食纤维等大豆活性因子作了较全面的介绍.     

饮用豆浆需注意的问题

豆浆有营养,价廉物美,因此很多幼儿园选购豆浆作为营养饮料。在饮用豆浆时,需要注意以下几个问题: 一、豆浆要煮沸煮透,这是因为生豆浆中含有胰蛋白酶抑制物,不煮透就破坏不了,饮用后会出现恶心、呕吐、腹泻等症状。二、不可用豆浆冲鸡蛋。因为蛋中的粘液性蛋白可能与豆浆中的胰蛋白酶结合,使鸡蛋和豆浆里的营养素遭到破坏。三、豆浆中莫加红糖。因为红糖中的有机酸可能与豆浆中的蛋白     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

Western and Eastern culture differences in commercial field

The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

风的曲线

Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.