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Recent Advances in the Preparation, Characterization and Applications of locust bean gum-Based Films

Journal of Renewable Materials 2020年第12期8卷 1565-1579页

作者： Limin Yuan Yuejie Wu Yan Qin Huimin Yong Jun Liu Testing Center Yangzhou UniversityYangzhou225009China College of Food Science and Engineering Yangzhou UniversityYangzhou225127China

locust bean gum(LBG)is a typical galactomannan isolated from carob bean(Ceratonia siliqua L.)cultivated in the Mediterranean *** to its superior biodegradable,rheological and film-forming properties,LBG has been used alone or combined with other biopolymers(e.g.,polysaccharides,proteins and lipids)to develop *** now,different kinds of functional ingredients(e.g.,montmorillonite,bacteriocins,antibiotics,plant extract,essential oils and microbial cells)have been added into LBG-based ***,the physical and functional properties of LBG-based films are affected by many factors,such as the structure of LBG,the type and content of other biopolymers and functional ingredients,and the physical treatment of film-forming ***-based films can be not only used as active packaging and edible coating in food industry but also used as wound dressings in pharmaceutical *** the first time,this review focuses on the recent advances in the preparation,characterization,physical and functional properties,and potential applications of LBG-based films.

关键词： locust bean gum film preparation characterization application

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Study of locust bean gum reinforced cyst-chitosan and oxidized dextran based semi-IPN cryogel dressing for hemostatic application

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Bioactive Materials 2018年第3期3卷 370-384页

作者： Lalit Kumar Meena Pavani Raval Dhaval Kedaria Rajesh Vasita School of Life Sciences Central University of GujaratSector-30Gandhinagar 382030India Government Engineering College Sector-28Gandhinagar 382028India

Severe blood loss due to traumatic injuries remains one of the leading causes of death in emergency *** continues to be the candidate material for hemostatic applications due to its inherent hemostatic ***,available chitosan-based dressings have been reported to have an acidic odor at the wound site due to the incorporation of acid based solvents for their fabrication and deformation under compression owing to low mechanical strength limiting its *** the present study semi-IPN cryogel was fabricated via Schiff's base cross-linking between the polyaldehyde groups of oxidized dextran and thiolated chitosan in presence of locust bean gum(LBG)known for its *** at12C yielded macroporous semi-IPN cryogels with an average pore size of 124.57±20.31 mm and 85.46%*** hydrophobicity index of LBG reinforced semi-IPN cryogel was reduced 2.42 times whereas the swelling ratio was increased by 156.08%compare to control *** increased hydrophilicity and swelling ratio inflated the compressive modulus from 28.1 kPa to 33.85 for LBG reinforced semi-IPN *** structural stability and constant degradation medium pH were also recorded over a period of 12 *** cryogels demonstrated lower adsorption affinity towards *** cytotoxicity assays(direct,indirect)with 3T3-L1 fibroblast cells confirmed the cytocompatibility of the *** hemolysis assay showed<5%hemolysis confirming blood compatibility of the fabricated cryogel,while whole blood clotting and platelet adhesion assays confirmed the hemostatic potential of semi-IPN cryogel.

关键词： Chitosan Oxidized dextran locust bean gum Cryogel Hemostasis

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A comparative analysis of β-mannanases of bacteria from Antarctica and Malaysia

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Advances in Polar Science 2013年第4期24卷 202-207页

作者： Clemente Michael Vui Ling Wong Heng Keat Tam Hui Yee Yong Biotechnology Research Institute Universiti Malaysia SabahJalan UMS

β-mannanase is an enzyme that is commonly expressed in environmental bacteria. It degrades hemicellulose found in plant material and recycles nutrients back into the environment. Because this enzyme significantly contributes to biodegradation and has recently been applied in industry, we conducted a comparative analysis of bacterial isolates found in soil samples from Schirmacher Oasis, Antarctica, and Sabah, Malaysia that were capable of degrading mannan. A total of 9 bacterial isolates from Antarctica and 30 bacterial isolates from Malaysia exhibited β-mannanase activity. These bacteria were differentiated and clustered using their random amplified polymorphic DNA （RAPD） profiles, and the β-mannanase activity of these isolates was tested at different temperatures and pH. Five out of 9 Antarctica isolates and seven out of 30 Malaysian isolates were identified based on their 16S rDNA sequences. Identified bacterial isolates from Antarctica were： MP1 （Bacillus amyloliquefaciens）, MP2 （Bacillus pumilus）, MP5 （Bacilluspumilus）, A40 （Arthrobacter sp.）, and C27 （Arthrobacter oxydans）. Identified bacterial isolates from Ma- laysia were： Y1 （Paenibacillus sp.）, Y2 （Bacillus sp.）, Y16 （Paenibacillus sp.）, Y18 （Paenibacillus sp.）, A7 （Paenibacillus sp.）, B26 （Streptomyces sp.）, and D4 （Paenibacillus amylolyticus）. β-mannanases produced by the Antarctica bacterial isolates MP1 （Bacillus amyloliquefaciens） and A40 （Arthrobacter sp.） were active at 5℃ and 20℃, respectively, while the β-mannanase pro- duced by the bacterial isolate from Malaysia, A7 （Paenibacillus sp.）, was active at 35 ℃.

关键词： Antarctic regions guar gum locust bean gum hemicellulose and hemicellulase

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