نتایج جستجو برای: coating of chitosan

تعداد نتایج: 21169972  

Alami, M, Ghorbani, M, Joshaghani, HR, Sadeghi Mahoonak, AR, Sadeghian Amin, Y,

Background and Objectives: Encapsulation is a process; by which, a susceptible compound is surrounded with a membrane or matrix that is able to release its contents at a controlled speed under certain conditions. In recent years, popularity of adding bioactive compounds to food products has increased. These compounds are usually sensitive to environmental, processing and/or gastrointestinal con...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - پژوهشکده فنی و مهندسی 1388

asymmetric polyethersulfone (pes) microfiltration flat sheet membranes were composed by the phase inversion method (pim) and were used as supports. composite membranes were fabricated by coating silicone rubber as selective layer. effect of different concentrations of pes and pdms and different solvent such as nmp, dmf and dms effects as pes solvents and support thickness and different coagulat...

Journal: :مهندسی بیوسیستم ایران 0
علی صحرایی خوش گردش کارشناسی ارشد، گروه علوم وصنایع غذایی، دانشکده کشاورزی و منابع طبیعی،دانشگاه آزاد اسلامی،واحدعلوم و تحقیقات یزد فوژان بدیعی دانشیار پژوهش بخش تحقیقات مهندسی صنایع غذایی و فناوری پس از برداشت، موسسه تحقیقات فنی و مهندسی کشاورزی، ایران سید علی یاسینی اردکانی استادیار، گروه مهندسی علوم و صنایع غذایی، دانشکده کشاورزی و منابع طبیعی دانشگاه آزاد اسلامی،واحدعلوم و تحقیقات یزد

the effects of a nano-emulsion chitosan-based coating on enhancing the shelf-life and quality of golab kohanz apples were studied. the nano-emulsion coating containing chitosan with a concentration of 2000 ppm was applied for coating of golab kohanz apples. coated and uncoated apples were packed in normal packaging cardboards and kept at 2 ± 1 °c with a relative humidity within 80-85%. flesh fi...

Journal: :Food chemistry 2016
Xiao Feng Nidhi Bansal Hongshun Yang

Coating of gelatin and chitosan can improve fish fillet's quality, but the mechanism is not clear. Chitosan/gelatin coatings significantly prevented deterioration of golden pomfret fillet at 4 °C. Chitosan with 7.2% gelatin group showed the best effect on preserving the length of myofibril, which remained greater than 15 μm at day 17 of storage, while for control, chitosan and chitosan combined...

Background: Active antimicrobial packaging is a novel method for increasing the safety and shelf life of food products. The present study aimed to investigate the inhibitory effects of chitosan coating nano-emulsion incorporated with Zataria multiflora and Bunium persicum essential oils at the concentrations of 0.5% and 1%, respectively on E. coli O157:H7 in vacuum-packed fish samples during 12...

2012
Orathai Wongmetha

The quality attributes and storage life of ‘Jinhwang’ mango fruit can be effectively maintained with 1-methylcyclopropene (1-MCP) application and/or chitosan coating. ‘Jinhwang’ mango fruit was treated with 5 μl l 1-MCP for 12 h, dipped with 0.5 % chitosan, 5 μl l 1-MCP combine with 0.5 % chitosan and untreated (control) then stored at 10C. Mango treated with 1-MCP maintained firmness, sucrose ...

Journal: :BMC Biotechnology 2008
XingYi Li XiangYe Kong Shuai Shi XiuLing Zheng Gang Guo YuQuan Wei ZhiYong Qian

BACKGROUND Absorption of antigens onto chitosan microparticles via electrostatic interaction is a common and relatively mild process suitable for mucosal vaccine. In order to increase the stability of antigens and prevent an immediate desorption of antigens from chitosan carriers in gastrointestinal tract, coating onto BSA loaded chitosan microparticles with sodium alginate was performed by lay...

Journal: :Journal of food protection 2012
T Jin J B Gurtler

This study was conducted to investigate the efficacy of antimicrobial coatings for inactivation of Salmonella on the surface of tomato stem scars. Scars were inoculated with a four-strain cocktail of Salmonella (serovars Montevideo, Newport, Saintpaul, and Typhimurium) and coated with acid-chitosan solutions. The chitosan coating with three acids (3A plus chitosan), the chitosan coating with o...

2016
Yage Xing Qinglian Xu Simon X. Yang Cunkun Chen Yong Tang Shumin Sun Liang Zhang Zhenming Che Xihong Li

The chitosan-based coating with antimicrobial agent has been developed recently to control the decay of fruits. However, its fresh keeping and antimicrobial mechanism is still not very clear. The preservation mechanism of chitosan coating with cinnamon oil for fruits storage is investigated in this paper. Results in the atomic force microscopy sensor images show that many micropores exist in th...

2009
Wen Hu Zheng-Ming Huang

A novel kind of functional sutures was developed by combining electrospinning with a braiding technique. After post treatments, the electrospun PLLA nanofiber threads which were collected uniaxially were made into a more compact braided wire. Chitosan was used as a coating agent to make the braided wire surface smoothened and functionalized. Morphology and mechanical properties of the PLLA sutu...

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