植物种子皮壳抗氧剂阿魏酸的生理功能和人体健康

自然界广泛存在于种子皮壳中的酚酸,是天然的抗氧化剂,对植物种子在恶劣环境下维护其生存和繁衍,发挥着重要保护作用。酚酸类主要活性成分为:对香豆酸、绿原酸、咖啡酸和阿魏酸等植物中分离提取的阿魏酸,对人体具有抗氧化和清除自由基、抗血栓形成、提高细胞膜稳定性,以及抗炎、调节免疫等功能。所以是一种天然、营养、多功能的食品配料。过去国内外大量应用于医药,近年食品应用也进入开发阶段。本文简要介绍这一新型天然抗氧剂阿魏酸的来源、生产方法、主要功能及国内外研发及市场概况,供参考。     

食品抗氧化剂与人体健康

随着经济的发展和生活的改善，食品安全和健康日益成为人们关注的焦点。食品添加荆中的抗氧化荆，是保证食品安全的重要措施，作者综述了近年国内外天然抗氧化荆对人体退行性疾病预防的研究，重点介绍了类胡萝卜素和多酚黄酮的性质、功能及在食品工业中的应用。     

植物多酚黄酮抗氧化剂与人体健康

主要综述了对植物多酚黄酮类物质的生物活性和安全性,其内容包括:茶多酚、甘草黄酮、竹叶黄酮、大豆异黄酮以及从各种鲜果提取物的功能成分,如葡萄提取物、杨梅提取物、橄榄提取物,乌饭树果提取物等。介绍了植物多酚黄酮的国际市场信息及相关的研究机构和生产单位。     

复配阿魏酸酰基抗氧化剂在煎炸过程中抗氧化能力的评估

向大豆油中添加不同量的阿魏酸酰胺类物质（阿魏酸苯乙酰胺、阿魏酸酪酰胺）与不同抗氧化剂（抗坏血酸棕榈酸酯、茶多酚棕榈酸酯、谷维素、迷迭香提取物、混合生育酚）的二元复配抗氧化剂,测定大豆油在不同煎炸时间下极性物质含量,以考察复配阿魏酸酰基抗氧化剂在煎炸过程中的抗氧化能力。结果表明：阿魏酸酪酰胺与茶多酚棕榈酸酯组成的复配抗氧化剂的抗氧化效果优于其他几种复配抗氧化剂,在二者的添加量各为250 mg/kg时,煎炸120 min内所得煎炸大豆油中极性物质含量最低,表现出最佳的抗氧化性能。研究结果为研究阿魏酸酰胺类物质的抗氧化机理及加快其工业化应用提供了重要依据。     

RP-HPLC法测定保健食品中阿魏酸、异阿魏酸含量

建立RP-HPLC色谱测定女士保健食品中阿魏酸、异阿魏酸含量的方法。采用70%甲醇加热回流提取方法处理样品,用YMC-C18色谱柱分离,梯度洗脱,以阿魏酸、异阿魏酸为标准物质,用PDA检测器分别在320 nm波长处检测。结果表明,标准物质阿魏酸、异阿魏酸的保留时间分别为9.2 min和9.8 min,不存在干扰,分离度大于1;分别在4.5μg/m L~45.8μg/m L、7.2μg/m L~36.0μg/m L浓度范围比值呈良好的线性关系(r0.999 2),样品日内精密度的RSD小于2.2%,样品平均加样回收率:阿魏酸为99.5%、异阿魏酸97.2%。     

豆奶与人体健康

豆奶是一种老幼皆宜的多功能营养饮料。豆乳类制品具有特殊的色、香、味，有“人造乳”之称。大豆是最富营养保健的食品原料，饮用豆奶对身体发育极其重要。     

糖与人体健康

食糖是一种纯天然的味美而价廉的营养食品，是人体重要的能量输入性能源。糖经人体消化吸收以后很快转化为血糖，供应人体所需的能量，恢复体力、解除疲劳，其分解产物为二氧化碳和水，可以完全排出体外，在人体内不残留任何有害物质，因此，适当进食糖有助于健康与长寿。     

新型食品抗氧化剂阿魏酸的提取及应用的研究

阿魏酸是中药当归的有效成分之一，本文研究了用醇提取法从当归中提取阿魏酸的最佳方案及抗自由基的性质，并且探讨了阿魏酸作为食品抗氧化剂对油脂抗氧化作用的应用。     

蔗糖的功能与人体健康

概述了蔗糖的生理功能及对人体健康的作用，还介绍了蔗糖在食品和其它工业中的应用。     

阿魏酸的功能和应用

阿魏酸是植物界普遍存在的一种酚酸，在植物体内很少以游离态存在，主要与低聚糖、多胺、脂类和多糖形成结合态。它有许多保健功能，如清除自由基、抗血栓、抗菌消炎、抑制肿瘤、防治高血压、心脏病、增强精子活力等。阿魏酸毒性低，易于为人体代谢，其用途越来越广泛。阿魏酸在食品工业中主要用于制备天然香兰素、抗氧化剂、防腐剂、交联剂和机能促进剂等，阿魏酸可通过化学合成法和提取法获得。     

芎䓖汤不同部位阿魏酸含量测定

目的比较用不同极性溶剂提取和大孔吸附树脂分离的芎汤不同部位中阿魏酸的含量。方法采用高效液相色谱法测定阿魏酸含量。结果乙酸乙酯提取部位和大孔吸附树脂40%乙醇洗脱部位中阿魏酸含量较高,相较于芎汤的醇提液转移率分别可达83%和74%。结论乙酸乙酯提取和大孔树脂40%乙醇洗脱均可有效富集芎汤提取液中的阿魏酸。     

微生物发酵产阿魏酸酯酶及释放阿魏酸研究概述

对微生物发酵法产阿魏酸酯酶以及释放阿魏酸的国内外研究进展进行综述,重点介绍阿魏酸酯酶的微生物来源、理化性质及阿魏酸酯酶分子克隆专利,同时对释放阿魏酸的生产工艺及影响因素进行简单总结,为探讨新产品的生产工艺提供参考信息。     

Demethylation of Ferulic Acid and Feruloyl-arabinoxylan by Microbial Cell Extracts

The O -demethylation of ferulic acid and feruloyl-arabinoxylan by the anaerobic bacteriaClostridium methoxybenzovorans (strain SR3) and the facultative aerobic bacteria Enterobacter cloacae (strain DG6) was investigated in order to produce caffeic acid and caffeoyl-arabinoxylan. As both strains produced endocellular enzymes, disrupted cell extracts from these two bacteria were prepared and tested. The SR3-disrupted cell extract was able to produce caffeic acid from free ferulic acid with 84% yield. The use of cysteine as reducing agent in the reaction medium stabilised the highly reactive caffeic acid produced. The DG6-disrupted cell extract used ferulic acid but no caffeic acid was detected, suggesting that it was only an intermediary product of the reaction. None of the two disrupted cell extracts were able to O-demethylate feruloyl-arabinoxylans.     

Effects of Fermented Edible Seeds and Their Products on Human Health: Bioactive Components and Bioactivities

There is a long history of using fermentation in food production. Edible seeds, such as certain beans and cereal grains, are important in the human diet and provide many health benefits. Various microbes, such as lactic acid bacteria, molds, and yeasts, considered as generally recognized as safe (GRAS) microbes, are commonly used to ferment edible seeds and their products. Fermentation can change bioactive components and produce new bioactivities. In order to highlight the importance of fermentation on bioactive components and bioactivities in edible seeds, this review, therefore, summarizes recent relevant studies and discusses fermentation procedures and influences of fermentation on their bioactive components and bioactivities. Overall, fermented edible seeds and their products contain enhanced bioactive components, especially γ‐aminobutyric acid and natural phenolics, and they possess versatile bioactivities, such as antioxidant and anti‐cancer effects, and, therefore, can be recommended as an important part of the human diet, or they can be developed into functional foods to help in the prevention of certain chronic diseases.     

Ferulic Acid and Naturally Occurring Compounds Bearing a Feruloyl Moiety: A Review on Their Structures,Occurrence, and Potential Health Benefits

The ubiquitous compound 4‐hydroxy‐3‐methoxycinnamic acid, also known as ferulic acid (FA), constitutes a bioactive ingredient of many foods that may offer beneficial effects against disorders related to oxidative stress, including cancer, diabetes, and neurodegenerative diseases. This review discusses the antioxidant properties of FA, establishing relationships to several biological activities already described for this natural product. Next, 387 naturally occurring compounds, all isolated from plants and published between 1990 and 2015, the structures of which bear 1 or more feruloyl moieties, are covered in this review along with their structural formulas, botanical sources, and bioactivities. The compounds’ distribution, structural patterns, bioactivities, and perspectives on food research are also succinctly discussed.     

膳食维生素与人体健康

目前世界上公认的维生素主要有13种。维生素对维持人体正常生理功能具有重要意义，维生素缺乏症是当今世界上与营养相关的人类疾病的重要表现之一。现阶段我国居民日常膳食中容易缺乏的维生素以VA和VB2为主，其次为VB1和VC。了解维生素的相关知识，对维护人体健康具有有益作用。     

Influence of (+)-Catechin and Ferulic Acid on Formation of Beer Haze and Their Removal through different Polyvinylpolypyrollidone-Types

The influence of (+)-catechin and ferulic acid on the formation of haze was investigated. Both phenolic compounds were added in different concentrations to beer before ageing through a force test. The removal of these compounds was observed by measuring the difference before and after forcing the beer. (+)-Catechin and ferulic acid showed haze-decreasing as well as haze-increasing properties. The removal of (+)-catechin and ferulic acid from beer through three types of polyvinylpolypyrollidone (PVPP) at several concentrations was investigated. The removal of (+)-catechin and ferulic acid by PVPP-filtration was totally different. The removal of (+)-catechin can be used as a basis to calculate the doses for a desired stability, whereas ferulic acid is removed in irregular amounts.     

葡萄酒中的多酚类物质及其保健功能

流行病学研究表明 ,适量的饮用葡萄酒有益于身体健康。进一步的研究表明 ,葡萄酒中含有较高水平的多酚类物质 ,如白藜芦醇 ,槲皮酮和儿茶酚等 ,这些物质是强抗氧化剂 ,具有抑制冠心病、动脉粥样硬化、消除自由基、抗癌和抗炎症等作用。文中介绍了葡萄酒中的多酚类物质 ,以及它们的生物活性和作用机理。