نتایج جستجو برای: water vapor permeability and tensile strength were determinedalso

تعداد نتایج: 16989607  

Background and Objectives: Microbial activity is the main factor in spoiling food products, which not only changes their texture and taste but also causes economic damage and poisoning. The present study aimed to assess the effects of essential oil of Bane (Pistacia atlantica) on physico-mechanical and antimicrobial properties of gelatin- carboxymethyl cellulose film. Materials and Methods: ...

Journal: :Tekstil Ve Konfeksiyon 2023

Surgical gowns are used as protective clothing in operating room for medical personnel and patients to minimize the transmission of viruses pathogens designed serve a barrier against non-sterile area reduce risk infections. In this study, since disposable provide better effect compared reusable ones, surgical using nonwoven fabric membrane-nonwoven combination were investigated terms their perf...

       Food packaging extensively uses plastic films and containers of petroleum-based polymers for their excellent functional properties and competitive price. Plastic packaging has become a central focus of waste reduction efforts, particularly in aesthetic terms of damage to flora and fauna. Presently, consumers require greater quality and longer shelf lives for their foodstuffs, while they ...

Fallah, M, Mohammadi, R, Rouhi, M, Sadeghi, E, Sarlak, Z,

Background and Objectives: Active packaging is an improved form of conventional packaging that can preserve quality of foods and increase durability and safety of food products due to their antimicrobial and antioxidant characteristics.  Materials & Methods: In this study, effects of olibanum essential oil on physicochemical, structural, antimicrobial and antioxidant characteristics of gelatin...

2009

The properties and permeability of aroma compounds in food through the cassava starch films was investigated. Films were prepared by 5% starch and properties of the films were monitored at different concentration of two plasticizers; glycerol and sorbitol. Sorbitol-cassava starch films showed a better transmission rate (water vapor or/and oxygen), and had a higher mechanical properties; tensile...

2016
M A Valdivia-López A Tecante S Granados-Navarrete C Martínez-García

A protein concentrate (PC) was obtained from Grouper fish skin and it was used to prepare films with different amounts of sorbitol and glycerol as plasticizers. The best performing films regarding resistance were then modified with various concentrations of CaCl2, CaSO4 (calcium salts), and glucono-δ-lactone (GDL) with the purpose of improving their mechanical and barrier properties. These film...

Journal: :Lab on a chip 2015
Z G Li S Xiong L K Chin K Ando J B Zhang A Q Liu

In this paper, for the first time, the tensile strength of water is directly measured using an optofluidic chip based on the displacement of air-water interface deformation with homogeneous nucleation. When water in a microchannel is stretched dynamically via laser-induced shock reflection at the air-water interface, the shock pressures are determined by measuring the displacements of the defor...

Journal: :iranian journal of pharmaceutical sciences 0
majid javanmard department of food science, institute of chemical technologies, iranian research organization for science and technology (irost), tehran, iran

food packaging extensively uses plastic films and containers of petroleum-based polymers for their excellent functional properties and competitive price. plastic packaging has become a central focus of waste reduction efforts, particularly in aesthetic terms of damage to flora and fauna. presently, consumers require greater quality and longer shelf lives for their foodstuffs, while they demand ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی 1392

flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...

Journal: :international journal of nanoscience and nanotechnology 2014
saeed dadashi seyed mohammad mousavi zahra emam-djomeh abdulrasoul oromiehie

nanocomposite composed of organoclay(cloisite 20a-c20a) and poly lactic acid (pla) was prepared by solvent casting method. physical, mechanical, thermal, barrier and microstructure properties of the composite were studied. x-ray diffraction (xrd) patterns and scanning electron microscopy (sem) images revealed that the diffraction peak of nanoclay shifted to lower angles and the d-spacing betwee...

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