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Xiaohang Yu,Xiangzhao Mao,Shuai He,Pei Liu,Yanchao Wang,Changhu Xue 한국식품과학회 2014 Food Science and Biotechnology Vol.23 No.5
Biochemical characteristics of fast fermentedfish sauce made by adding anchovy juice during the processof low salt, solid state fermentation were investigated using3 different techniques (A: adding anchovy juice in theprocess of making koji, B: adding anchovy juice in theprocess of fermentation, and C: not adding anchovy juice). After fermentation under optimized conditions, the aminonitrogen contents of sauces A and B were 7.50 and 7.73mg/mL after two weeks, respectively. Chemical analysissuggested that the amounts of amino nitrogen and reducingsugar, degree of hydrolysis (DH), DPPH radical-scavengingactivity, total acidity, and total amino acid in sauce B werehigher than those in sauce A. Volatile odorant analysis andsensory evaluation showed that sauce B was superior tosauce A. Adding anchovy juice during the process offermentation is a good way to produce a fish sauce with agood flavor and nutrition value.
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Yanzeng Dong,Xiaohang Yu,Zhiheng Wang,Xin Liu,Yanyan Liu,Ruiyao Gao,Songdong Yao 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.117 No.-
Effects of HY addition on NiMoS active phase of NiMo(NH3) impregnated NiMo/Al2O3-HY and its role in4,6-dimethyl-dibenzothiophene hydrodesulfurization was investigated. The results show that HY canpromote HDS reaction by changing the morphology of NiMoS nanoclusters even when isomerization of4,6-DMDBT is not involved. In the absence of strong acid sites, TOF of NiMo/Al2O3 catalyst was stillimproved by 90%. XRD, H2-TPR, Raman, TEM, and XPS characterization show that proper metal supportinteraction caused by HY addition is beneficial to the formation of large-scale multilayer NiNoS clusters,the enrichment of Ni in NiMoS clusters and the increase of NiMoS active sites, thereby leading HDS catalystexhibiting highest intrinsic activity (TOF). However, too strong or too weak metal support interactionwill reduce intrinsic activity for HDS catalysts. When pH value of impregnation solution is 10, thestrong metal support interaction reduces layer numbers of NiMoS clusters. When pH value of impregnationsolution is 11, negative charge hinders the formation of NiMoS clusters. This not only leads to a furtherdecrease HYD pathway selectivity, but also significantly reduces the initial reaction rate of HDScatalyst.
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