{"title":"Expression Pattern of β-glucanase and Production of Water-soluble Polysaccharide in Pedobacter sp. PR-M6","authors":"W. Jung, Yong-Su Song","doi":"10.17642/JCC.24.1.3","DOIUrl":"https://doi.org/10.17642/JCC.24.1.3","url":null,"abstract":"","PeriodicalId":15363,"journal":{"name":"Journal of Chitin and Chitosan","volume":"160 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73218319","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}
{"title":"Physicochemical Properties and Antioxidant Activities of Safflower (Carthamus tinctorius L.) Extracts according to Fermentation of Lactic Acid Bacteria","authors":"Joo-Hee Hong, M. Im","doi":"10.17642/JCC.24.1.4","DOIUrl":"https://doi.org/10.17642/JCC.24.1.4","url":null,"abstract":"","PeriodicalId":15363,"journal":{"name":"Journal of Chitin and Chitosan","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79150441","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}
{"title":"Eliminatory Effect of Functional Drink Added with Several Medicinal Herb Complex Extracts on Ethanol-induced Blood Alcohol Concentration and Hangover in Ra","authors":"Kwontack Hwang, Jin-Su Kim, Kim Sunoh","doi":"10.17642/JCC.24.1.5","DOIUrl":"https://doi.org/10.17642/JCC.24.1.5","url":null,"abstract":"","PeriodicalId":15363,"journal":{"name":"Journal of Chitin and Chitosan","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86736073","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}
Ji Hyun Lee, J. Lee, So Yeon Park, Yoo-kyeong Jang, Y. Lim, Hye Yoon Lee, Young Min Jung, Hae Chang Lee, Jong Hwa Lee, S. Amna, Jae Kweon Park
The present study was aimed to isolate the bacteria producing chitinolytic enzymes including chitin deacetylase (CDA) from soil origin. About 24 bacteria were screened for their chitinolytic enzymes producing ability on the basis of colloidal chitin. Amongst one of the most potent isolates designated to JI-02 was further selected as the most prominent chitinolytic and CDAlike enzyme (CDA-X) producer based on the ability of deacetylation of an artificial substrate pNP-acetamilide. The maximum production of CDA-X in crude enzyme from JI-02 was observed in the presence of 1% colloidal chitin at 37°C and pH 6.4 after 120 h of incubation. Potent enzyme activity of CDA-X was determined toward pNP-acetamilide, demonstrating that optimal pH, temperature and ionic strength of the CDA-X were assessed to be 7.0, 52°C and 125 mM, respectively. Unexpectedly, Nacetylglucosamine (GlcNAc) was not fully converted by the action of CDA-X to glucosamine (GlcN) under the established conditions. Further study on enzyme activity toward chitin-oligosaccharides consisting of multi-N-acetylglucosamine (GlcNAc)n, n=2-5 may be necessary to elucidate the mode of action which requires the minimum size of (GlcNAc)n. However, our data suggest that CDA-X can convert chitin to chitosan with the maximum yield of approximately 0.08g/L during the fermentation of the strain in the presence of chitin. Furthermore, we found that crude enzyme showed the significant chitosanolytic activity. Taken together, our data suggest that the strain JI-02 may be a potential candidate as a particular strain for better understating of chitin catabolic pathway.
{"title":"Production and Characterization of Enzymes Involved in Chitin Catabolic Cascade from a Bacterial Strain Isolated from Soil","authors":"Ji Hyun Lee, J. Lee, So Yeon Park, Yoo-kyeong Jang, Y. Lim, Hye Yoon Lee, Young Min Jung, Hae Chang Lee, Jong Hwa Lee, S. Amna, Jae Kweon Park","doi":"10.17642/JCC.24.1.1","DOIUrl":"https://doi.org/10.17642/JCC.24.1.1","url":null,"abstract":"The present study was aimed to isolate the bacteria producing chitinolytic enzymes including chitin deacetylase (CDA) from soil origin. About 24 bacteria were screened for their chitinolytic enzymes producing ability on the basis of colloidal chitin. Amongst one of the most potent isolates designated to JI-02 was further selected as the most prominent chitinolytic and CDAlike enzyme (CDA-X) producer based on the ability of deacetylation of an artificial substrate pNP-acetamilide. The maximum production of CDA-X in crude enzyme from JI-02 was observed in the presence of 1% colloidal chitin at 37°C and pH 6.4 after 120 h of incubation. Potent enzyme activity of CDA-X was determined toward pNP-acetamilide, demonstrating that optimal pH, temperature and ionic strength of the CDA-X were assessed to be 7.0, 52°C and 125 mM, respectively. Unexpectedly, Nacetylglucosamine (GlcNAc) was not fully converted by the action of CDA-X to glucosamine (GlcN) under the established conditions. Further study on enzyme activity toward chitin-oligosaccharides consisting of multi-N-acetylglucosamine (GlcNAc)n, n=2-5 may be necessary to elucidate the mode of action which requires the minimum size of (GlcNAc)n. However, our data suggest that CDA-X can convert chitin to chitosan with the maximum yield of approximately 0.08g/L during the fermentation of the strain in the presence of chitin. Furthermore, we found that crude enzyme showed the significant chitosanolytic activity. Taken together, our data suggest that the strain JI-02 may be a potential candidate as a particular strain for better understating of chitin catabolic pathway.","PeriodicalId":15363,"journal":{"name":"Journal of Chitin and Chitosan","volume":"75 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80889589","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}
Jae-Wook Lee, Sun-Mi Jung, Jae-Hyeok Lee, Yeongpil Lee
{"title":"Electrospun Chitosan/PVA Films with Anthocyanines from Brassica oleraceae (Red Cabbage) for Smart Food Packaging","authors":"Jae-Wook Lee, Sun-Mi Jung, Jae-Hyeok Lee, Yeongpil Lee","doi":"10.17642/JCC.24.1.8","DOIUrl":"https://doi.org/10.17642/JCC.24.1.8","url":null,"abstract":"","PeriodicalId":15363,"journal":{"name":"Journal of Chitin and Chitosan","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81941626","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}
{"title":"Flexible and Transparent Composite Film Based on Nanofibrillated Chitin Using Aqueous Counter Collision","authors":"Hyunbin Hwang, Joong‐Kwon Kim, Jungho Jin","doi":"10.17642/JCC.24.1.7","DOIUrl":"https://doi.org/10.17642/JCC.24.1.7","url":null,"abstract":"","PeriodicalId":15363,"journal":{"name":"Journal of Chitin and Chitosan","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81192782","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}
{"title":"Preparation of Glycine-Fe3O4-Chitosan Nanoparticles Delivery System for Drug Carrier","authors":"J. Park, Kang Ik Joong","doi":"10.17642/JCC.24.1.6","DOIUrl":"https://doi.org/10.17642/JCC.24.1.6","url":null,"abstract":"","PeriodicalId":15363,"journal":{"name":"Journal of Chitin and Chitosan","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79215667","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}
Min-sun Kim, Hee-Jeong Kim, E. Jung, Ju-yong Park, J. Chae, Kwontack Hwang, Seung-Je Lee
{"title":"Optimal Culture Conditions and Food Waste Decomposition Effects of Mixed Strains Separated from Traditional Fermented Food and Soils","authors":"Min-sun Kim, Hee-Jeong Kim, E. Jung, Ju-yong Park, J. Chae, Kwontack Hwang, Seung-Je Lee","doi":"10.17642/jcc.23.4.10","DOIUrl":"https://doi.org/10.17642/jcc.23.4.10","url":null,"abstract":"","PeriodicalId":15363,"journal":{"name":"Journal of Chitin and Chitosan","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79681413","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}
{"title":"Quality Characteristics and Antioxidant Activities of Black Rice Muffins Added with Chito-Oligosaccharide","authors":"Eo-jin Park","doi":"10.17642/JCC.23.4.1","DOIUrl":"https://doi.org/10.17642/JCC.23.4.1","url":null,"abstract":"","PeriodicalId":15363,"journal":{"name":"Journal of Chitin and Chitosan","volume":"67 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89598475","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}
E. Han, Hyun-Soo Kim, Eun-ji Shin, M. Kim, Hee-Jin Han, Y. Jeon, Y. Jee, G. Ahn
{"title":"Anti-allergic Effect of Eckolona cava Ethyl Acetate Fraction of on IgE/BSA-stimulated Bone Marrow-derived Cultured Mast Cells","authors":"E. Han, Hyun-Soo Kim, Eun-ji Shin, M. Kim, Hee-Jin Han, Y. Jeon, Y. Jee, G. Ahn","doi":"10.17642/jcc.23.4.9","DOIUrl":"https://doi.org/10.17642/jcc.23.4.9","url":null,"abstract":"","PeriodicalId":15363,"journal":{"name":"Journal of Chitin and Chitosan","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83078081","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}
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