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Microcapsules of Conjugated Linoleic Acid by Sodium Octenylsuccinate Starch(辛烯基琥珀酸淀粉酯包埋共轭亚油酸工艺的研究) [PDF]

open access: yesShipin kexue jishu xuebao, 2014
In this study, conjugated linoleic acid was embedded by sodium octenylsuccinate starch. Through the response surface methodology experiment, the optimum parameters of conjugated linoleic acid microcapsulation were as follows:core material/wall material 1∶
ZHOU Zheng(周 正)   +1 more
doaj   +1 more source

Cutaneous microRNA expression in healthy Labrador and Golden retrievers and retrievers with allergic and inflammatory skin diseases

open access: yesVeterinary Dermatology, Volume 32, Issue 4, Page 331-e92, August 2021., 2021
Background MicroRNAs (miRNA) are short, single‐stranded RNA molecules that regulate gene expression in a post‐transcriptional manner. Their expression is proposed to be tissue‐specific and alterations in miRNA expression have been detected in many diseases. Objective To compare miRNA expression in the skin of healthy Labrador and golden retrievers, and
Marie Isabel Morlang   +3 more
wiley   +1 more source

Study on Preparation Method and Characteristics of Multi-core Microcapsules Loaded with Two Probiotics(负载2种益生菌的多核微胶囊制备方法及特性研究) [PDF]

open access: yesShipin kexue jishu xuebao, 2023
In order to solve the loss of activity of probiotics in the process of storage and feeding, as well as the competition and antagonism that may occur when two or more probiotics are mixed, and to better exert the step-by-step release and synergistic ...
CHANG Shihan(常诗晗)   +8 more
doaj   +1 more source

金枪鱼油微胶囊的复合凝聚法制备工艺及其理化性质Preparation and physicochemical properties of tuna oil microcapsules using complex coacervation

open access: yesZhongguo youzhi, 2022
为提高金枪鱼油的稳定性,以明胶-六偏磷酸钠为壁材,通过复合凝聚法包埋金枪鱼油制备金枪鱼油微胶囊。采用单因素实验筛选了适宜的鱼油抗氧化剂和微胶囊明胶壁材,并优化了鱼油O/W乳液的均质条件、复合凝聚发生和微胶囊形成的适宜pH及恒温搅拌机转速;在优化的条件下,分析所制备微胶囊的微观形态、氧化稳定性、包埋特性和粉体性质。结果表明,复合凝聚法制备金枪鱼油微胶囊的适宜条件为:在金枪鱼油中添加0.04%维生素E,采用99%生物技术级明胶,在均质速度25 000 r/min、乳化时间35 min下制备金枪鱼油O/W乳液,
汤夕瑶1,禤俊勇1,夏秋瑜1,2,3,李晶莹1,孙钦秀1,2,3,魏帅1,2,3,郝记明1,2,3,吉宏武1,2,3,刘书成1,2,3 TANG Xiyao1,XUAN Junyong1,XIA Qiuyu1,2,3, LI Jingying1,SUN Qinxiu1,2,3, WEI Shuai1,2,3,HAO Jiming1,2,3,JI Hongwu1,2,3,LIU Shucheng1,2,3
doaj   +1 more source

不同壁材组合对三丁酸甘油酯微胶囊性质的影响Effects of different wall material combinations on the properties of tributyrin microcapsules

open access: yesZhongguo youzhi, 2023
为拓宽三丁酸甘油酯的应用范围,以三丁酸甘油酯为芯材,抗性糊精-明胶-海藻酸钠(RGS)、抗性糊精-明胶-海藻酸钠-月桂酸单甘酯(RGSG)、抗性糊精-明胶-壳聚糖(RGC)、抗性糊精-明胶-壳聚糖-月桂酸单甘酯(RGCG)为壁材,采用喷雾干燥法制备4种微胶囊,对微胶囊包埋率及产率、粒径分布、基本理化性质、颜色、结构特征及外观形貌进行分析,探究不同壁材对三丁酸甘油酯微胶囊性质的影响。结果表明:RGSG微胶囊包埋率(91.05%)及产率(90.46%)较高;与RGC、RGS微胶囊相比,RGSG ...
桑祯玉1,徐青青2,陈莹2,陈晓涵2,杨博1,王永华2,3 SANG Zhenyu1, XU Qingqing2, CHEN Ying2, CHEN Xiaohan2, YANG Bo1,WANG Yonghua2,3
doaj   +1 more source

Comparison of Immobilization Methods of Sucrose Isomerase PalI with Embedding and Crosslinking(蔗糖异构酶PalI包埋和交联固定化方法比较) [PDF]

open access: yesShipin kexue jishu xuebao, 2019
The immobilization methods using sodium alginate as the embedding medium and flutaraldehyde as the crosslinker was used to improve the cyclic utilization and stability of immobilized sucrose isomerase PalI from Klebsiella sp.
WANG Bingbing(王兵兵)   +3 more
doaj   +1 more source

金属有机骨架固定化脂肪酶的构筑及其催化 制备生物柴油的研究进展Progress on immobilization of lipase on metal organic framework and its catalytic preparation of biodiesel

open access: yesZhongguo youzhi, 2023
摘要:金属有机骨架(MOF)具有多样性、高比表面积、化学稳定性和易于后修饰等优势,是固定化酶的优良载体。为了促进生物柴油的发展,针对MOF固定化脂肪酶的方法及其在生物柴油生产中的应用进展进行了综述。MOF固定化脂肪酶的方法有物理吸附法、共价结合法、原位包埋法等,采用MOF固定脂肪酶生产生物柴油,在一定程度上降低了生产成本和提高了产率。开发新型的脂肪酶固定化方法及寻求合适的固定化载体是生物柴油发展的关键。 Metal organic framework (MOF) is an excellent ...
林佳乐,夏率博,冯笑笑,CHEONG Lingzhi LIN Jiale, XIA Shuaibo, FENG Xiaoxiao, CHEONG Lingzhi
doaj   +1 more source

海藻酸钠包埋高效菌种强化处理聚酯废水的试验研究

open access: yesGongye shui chuli, 2006
对海藻酸钠-氯化钙法包埋某高效微生物菌种用于强化聚酯废水的生物处理进行了试验研究,同时将其与普通系统和高效菌种的悬浮投加型强化系统作了相应比较。结果表明:相对普通系统,悬浮投加高效菌种可使出水COD降低100mg/L,处理率提高8%,而用海藻酸钠-氯化钙法包埋固定化之后投加则可使出水COD降低200mg/L,处理率提高14%,使最终出水COD达到100mg/L以下,达到出水的排放要求,且减少了废水中对人类和环境有较大危害的1,4-二氧杂环己烷的含量。
赵美云, 雷中方
doaj   +2 more sources

固定化米黑根毛霉脂肪酶的制备工艺优化 及其酶学性质 Optimization of preparation process of immobilized Rhizomucor miehei lipase and its enzymatic properties

open access: yesZhongguo youzhi, 2022
以海藻酸钠-羧甲基纤维素钠(CMC)为复合载体,戊二醛为交联剂,探究了包埋-交联法制备固定化米黑根毛霉脂肪酶的最佳工艺条件,并对固定化米黑根毛霉脂肪酶的酶学性质进行分析。结果表明,制备固定化米黑根毛霉脂肪酶的最佳工艺条件为海藻酸钠质量分数2.5%、CMC质量分数1.5%、脂肪酶液浓度800 U/mL、CaCl2质量分数5%、戊二醛质量分数0.03%、交联固定化时间30 min,在此条件下固定化米黑根毛霉脂肪酶的酶活力为245.58 U/g,与游离脂肪酶相比,固定化脂肪酶热稳定性和pH稳定性均有所提高 ...
彭思敏,肖菁,吴卫国,廖卢艳 PENG Simin, XIAO Jing, WU Weiguo, LIAO Luyan
doaj   +1 more source

裂殖壶藻油提取及高浓度 EPA/DHA 分离纯化工艺研究Extraction of oils from Schizochytrium sp. and the separation and purification of high-concentration EPA/DHA

open access: yesZhongguo youzhi
为实现藻油中ω-3多不饱和脂肪酸(ω-3 PUFAs)的简单、绿色、高效分离纯化工艺,首先利用裂殖壶菌原始菌株及定向驯化菌株ALE40为原料提取油脂,通过优势性评估及细胞通透性对比二者提油效果,并通过测定油脂指标对比3种提油方法(酸解法、超声干法、超声湿法)优劣。对超声湿法提取的粗藻油采用酯交换法进行乙酯化后,联合尿素包埋法和分子蒸馏技术富集高浓度二十碳五烯酸(EPA)和二十二碳六烯酸(DHA),对酯交换及尿素包埋工艺条件进行单因素实验优化,通过对分子蒸馏重相DHA和EPA含量测定确定分子蒸馏级数 ...
杨玲1,2,欧莹1,2,秦宇1,2,杨海麟1,2 YANG Ling1,2, OU Ying1,2, QIN Yu1,2, YANG Hailin1,2
doaj   +1 more source

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