Journal of Fermentation Technology最新文献_第4页

Journal of Fermentation Technology Pub Date : 1988-01-01 DOI: 10.1016/0385-6380(88)90088-X

Rong Xiao, Masatoshi Tanida, Shoichi Takao

引用次数: 39

Mechanistic analysis of xanthan gum production in a stirred tank 搅拌槽生产黄原胶的机理分析

Journal of Fermentation Technology Pub Date : 1988-01-01 DOI: 10.1016/0385-6380(88)90115-X

Hitoshi Funahashi , Koh-Ichi Hirai , Toshiomi Yoshida , Hisaharu Taguchi

{"title":"Mechanistic analysis of xanthan gum production in a stirred tank","authors":"Hitoshi Funahashi , Koh-Ichi Hirai , Toshiomi Yoshida , Hisaharu Taguchi","doi":"10.1016/0385-6380(88)90115-X","DOIUrl":"10.1016/0385-6380(88)90115-X","url":null,"abstract":"<div>The overall effect of agitation on xanthan gum production by Xanthomonas campestris ATCC13951 in a stirred vessel was mechanistically analyzed considering local variation of the specific production rate due to variation of shear stress in the vessel. The whole liquid volume in a fermentor was roughly divided into three regions; the micromixing region around the impeller with high shear stress, the macromixing region dominated by a circulating flow and the stagnant region. The value of the shear rate was first ascertained by experiments in order to obtain a picture of shear rate variation in a radial direction from the impeller, and the equivalence between the volumes of the high shear stress region and micromixing region was confirmed. The shear stress obtained using a correlation between the shear rate at the impeller tip and Reynolds number of Wichterle et al. was used as a representative of the shear stress in the micromixing region, and the shear stress estimated by use of an empirical correlation between the average shear rate in a fermentor and agitation speed derived by Metzner et al. was adopted as a representative of the shear stress in the macromixing region. The information about the circulation time distribution was also used to take into account oxygen deficiency during circulation of liquid elements in the macromixing region, considering that oxygen from the gas phase was supplied mainly in the high shear region. The calculated values of xanthan gum concentrations which were obtained by the proposed simulation method agreed well with the experimental data in the time course of xanthan gum production at various agitation speeds. Experimental results of the relationship between the overall specific production rate and ND (N, agitation speed, and D, impeller diameter) was also verified by the proposed method.</div>","PeriodicalId":15702,"journal":{"name":"Journal of Fermentation Technology","volume":"66 3","pages":"Pages 355-364"},"PeriodicalIF":0.0,"publicationDate":"1988-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0385-6380(88)90115-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82428365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 22

Conversion of 5′-inosinic acid to inosine by Streptomyces aureus 金链霉菌将5′-肌苷酸转化为肌苷

Journal of Fermentation Technology Pub Date : 1988-01-01 DOI: 10.1016/0385-6380(88)90092-1

Krung Hyun Sohn , Chan Yong Lee , Ke Ho Lee , Young Je Cho , Jae Heung Lee

引用次数: 0

Culture conditions for intracellular lipase production by Rhizopus chinensis and its immobilization within biomass support particles 中国根霉胞内产脂酶的培养条件及其在生物质载体颗粒内的固定化

Journal of Fermentation Technology Pub Date : 1988-01-01 DOI: 10.1016/0385-6380(88)90012-X

Toshimitsu Nakashima, Hideki Fukuda, Susumu Kyotani, Hisashi Morikawa

{"title":"Culture conditions for intracellular lipase production by Rhizopus chinensis and its immobilization within biomass support particles","authors":"Toshimitsu Nakashima, Hideki Fukuda, Susumu Kyotani, Hisashi Morikawa","doi":"10.1016/0385-6380(88)90012-X","DOIUrl":"10.1016/0385-6380(88)90012-X","url":null,"abstract":"<div>Acetone-dried cells of Rhizopus chinensis (with a 1,3-positional specificity lipase) were investigated for the interestierification reaction of olive oil and methyl stearate. First, the culture conditions for intracellular lipase production were examined, and then the activities of dried cells obtained from immobilization in Biomass Support Particles (BSPs) were compared with those of freely suspended cells.It was clear from cultivation of freely suspended cells that intracellular lipase activity for the interesterification reaction was enhanced sifnificantly by the presence of oleic acid, oil, and tea oil, but that the presence of glucose reduced the activity.The specific activity of dried cells within BSPs increased 7-fold compared with that obrained from freely suspended cells.The process presented here, using immobilization within BSPs, can provide cells directly as a catalyst with high activity, where cells become immobilized simply during batch operation, and no special preparation of cells is necessary. Therefore, the reaction system using dried cells immobilized within BSPs is a promising interesterifcation process for industrial applications.</div>","PeriodicalId":15702,"journal":{"name":"Journal of Fermentation Technology","volume":"66 4","pages":"Pages 441-448"},"PeriodicalIF":0.0,"publicationDate":"1988-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0385-6380(88)90012-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91260279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 82

Magnesium requirement for biological removal of phosphate by activated sludge 活性污泥生物去除磷酸盐所需镁

Journal of Fermentation Technology Pub Date : 1988-01-01 DOI: 10.1016/0385-6380(88)90070-2

Hiroshi Imai , Kazuo Endoh , Takeshi Kozuka

{"title":"Magnesium requirement for biological removal of phosphate by activated sludge","authors":"Hiroshi Imai , Kazuo Endoh , Takeshi Kozuka","doi":"10.1016/0385-6380(88)90070-2","DOIUrl":"10.1016/0385-6380(88)90070-2","url":null,"abstract":"<div>The effects of magnesium on excess uptake of phosphate in an aerobic-anaerobic activated sludge process were examined by the fill and draw procedure. The alternation of anaerobic and aerobic conditions in one cycle of fill and draw process was varied many ways.The presence of sufficient magnesium was necessary for uptake of excess phosphate. When sludge contained more phosphorus than the upper limit of phosphorus content in the usual aerobic activated sludge, 2.5% by weight, magnesium was also contained in more than an ordinary amount (0.5%). Their contents in the sludge at the end of each cycle of the process were correlated with each other by a linear equation with the correlation coefficient of 0.99. When magnesium concentration was insufficient for the uptake of excess phosphate, its concentration in the treated water was of the order of 0.1 mg/l.In the first anaerobic period both phosphate and magnesium were released, and in a successive aerobic period they were taken up again. The weight ratio of differential amounts of phosphorus and magnesium released or taken up changed with time in one cycle.Dynamic behaviors of phosphate and magnesium removal against the step change of feed magnesium concentration also showed a stoichiometric relationship supporting the correlation equation above mentioned.</div>","PeriodicalId":15702,"journal":{"name":"Journal of Fermentation Technology","volume":"66 6","pages":"Pages 657-666"},"PeriodicalIF":0.0,"publicationDate":"1988-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0385-6380(88)90070-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84920735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 25

Effective utilization of horseradish and Wasabi by treatment with supercritical carbon dioxide 超临界二氧化碳处理对辣根和山葵的有效利用

Journal of Fermentation Technology Pub Date : 1988-01-01 DOI: 10.1016/0385-6380(88)90114-8

Masayuki Tanaguchi , Ryuji Nomura , Masamichi Kamihira , Isao Kijima , Takeshi Kobayashi

引用次数: 10

Dissolution rate of powdered α-rice in Saké-mash 粉末状α-大米在萨克森豆浆中的溶出率

Journal of Fermentation Technology Pub Date : 1988-01-01 DOI: 10.1016/0385-6380(88)90057-X

Kazuo Sato, Hitoshi Utsunomiya, Kyoichi Kondo, Hideo Mishima, Shigezou Takemura, Kin-Ichi Nakamura, Kiyoshi Yoshizawa

引用次数: 0

Breeding of saké yeast harboring pep4 mutation 携带pep4突变的sak<s:1>酵母的选育

Journal of Fermentation Technology Pub Date : 1988-01-01 DOI: 10.1016/0385-6380(88)90139-2

Katsuhiko Kitamoto, Kiyoshi Yoshizawa

引用次数: 0

Isolation and characterization of a stable l-arginine producer from continuous culture broth of Corynebacterium acetoacidophilum 乙酰嗜酸棒状杆菌连续培养液中稳定的l-精氨酸产生菌的分离与鉴定

Journal of Fermentation Technology Pub Date : 1988-01-01 DOI: 10.1016/0385-6380(88)90105-7

Tomoki Azuma, Toshihide Nakanishi, Masahiro Sugimoto

引用次数: 19

Perfusion culture of hybridoma cells recycling higher-molecular-weight components 杂交瘤细胞循环高分子量组分的灌注培养

Journal of Fermentation Technology Pub Date : 1988-01-01 DOI: 10.1016/0385-6380(88)90143-4

Michiyuki Tokashiki, Kimihiko Hamamoto, Yoshiharu Takazawa

引用次数: 3