共查询到20条相似文献,搜索用时 125 毫秒
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棉织物的多元羧酸和壳聚糖抗菌防皱整理 总被引:15,自引:2,他引:13
讨论了两种多元羧酸的复配对棉织物防皱整理效果的影响,对羧酸浓度,壳聚糖以及催化剂和焙烘温度进行单因素分析,确定了抗菌防皱整理的最佳工艺。 相似文献
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活性染料与棉布多羧酸抗皱整理的关系 总被引:3,自引:0,他引:3
用多羧酸抗皱整剂衣康酸/马来酸,丁烷四羧酸,柠檬酸与国产活性洒料对棉织物进行染色,整理二浴法工艺,重点探讨活性染料与棉织物多羧酸抗皱整理的关系。 相似文献
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真丝绸多元羧酸-壳聚糖防皱整理 总被引:3,自引:0,他引:3
讨论了两种多元羧酸的复配以及与壳聚糖一起对真丝绸防皱整理的效果,对羧酸、壳聚糖及催化剂浓度和焙烘温度等进行了单因素分析,确定了防皱整理的最佳工艺。 相似文献
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研究了降解壳聚糖与聚羧酸MAA-1配合对棉织物进行整理的工艺,说明了经适正降解的壳聚糖与聚羧酸配合对棉织物进行整理,可获得免烫和抗菌效果。经过试验,得出了相应的工艺。 相似文献
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2 形态记忆整理工艺研究2 .1 多羧酸无甲醛形态记忆整理工艺研究随着人民生活水平日益提高 ,消费者对形态记忆整理的要求也越来越高 ,而应用传统N—羟甲基酰胺化合物进行形态记忆整理虽然能达到防皱效果 ,但由于整理后织物在贮存、穿着过程中会释放出甲醛 ,仍然会造成对环境的污染和人体健康的危害。2 0世纪 60年代初 ,GagliardiShippee首先发现多元羧酸可作为无醛免烫整理剂 ,并提出了多元羧酸与纤维素羟基发生酯化反应 ,使分子之间形成酯键交联 ,从而达到防皱效果的作用机理。用多元羧酸等无甲醛整理剂取代传统N—羟… 相似文献
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Figueroa-González I Quijano G Ramírez G Cruz-Guerrero A 《Journal of the science of food and agriculture》2011,91(8):1341-1348
Owing to their health benefits, probiotics and prebiotics are nowadays widely used in yogurts and fermented milks, which are leader products of functional foods worldwide. The world market for functional foods has grown rapidly in the last three decades, with an estimated size in 2003 of ca US$ 33 billion, while the European market estimation exceeded US$ 2 billion in the same year. However, the production of probiotics and prebiotics at industrial scale faces several challenges, including the search for economical and abundant raw materials for prebiotic production, the low-cost production of probiotics and the improvement of probiotic viability after storage or during the manufacturing process of the functional food. In this review, functional foods based on probiotics and prebiotics are introduced as a key biotechnological field with tremendous potential for innovation. A concise state of the art addressing the fundamentals and challenges for the development of new probiotic- and prebiotic-based foods is presented, the niches for future research being clearly identified and discussed. 相似文献
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常用消毒灭菌法及其机理与应用 总被引:3,自引:0,他引:3
介绍了采用消毒灭菌方法,有加热消毒法,紫外线辐射法和化学药剂消毒法。常用化学药剂有醛类、含氯消毒剂、醇类消毒剂以及高锰酸钾、生石灰等,阐释了消毒与灭菌两个概念的区别。 相似文献
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The objectives of the current study were to investigate the relationship between body condition score (BCS) and dairy form and changes in genetic parameters for BCS and dairy form within and across lactations and age. Body condition score and dairy form were obtained from the Holstein Association USA, Inc. Records were edited to include those cows classified between 24 and 60 mo of age and between 0 and 335 d in milk (DIM). A minimum of 20 daughters per sire and 15 cows per herd-classification visit were required. The dataset consisted of 135,178 records from 119,215 cows. Repeatability, multiple trait, and random regression models were used to analyze the data. All models included fixed effects for herd-classification visit, age within lactations 1, 2, and 3 or higher, and 5th-order polynomials for DIM. Random effects included sire and permanent environment for all models. Random regression models included age at classification nested within sire or DIM and lactation number nested within sire. Genetic variance for both BCS and dairy form was lowest in early lactation and highest in midlactation. Genetic correlations within and across lactations were high. The genetic correlation between DIM 0 in lactation 1 and DIM 305 in lactation 3 was estimated to be 0.77 for BCS and 0.60 for dairy form. The genetic correlation estimate between 30 mo of age at classification and 50 mo of age at classification was 0.94 for both dairy form and BCS. The repeatability models appeared to generate accurate evaluations for BCS or dairy form at all ages and stages of lactation. 相似文献
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