نتایج جستجو برای: wvp

تعداد نتایج: 169  

Journal: :pertanika journal of science and technology 2022

This study aimed to produce new edible coatings based on the mixture of sago starch, cellulose nanofiber (CNF), glycerol, and tween-80.The effect starch (5–10 g starch/100 ml distilled water), CNF (0.5–20% w/w), glycerol (10–30% tween-80 (0.5–10% w/w) concentration contact angle (CA), water vapor permeability (WVP), oxygen (PO2) tensile strength (TS) properties were optimized using factorial ex...

ژورنال: :علوم و صنایع غذایی ایران 2015
وجیهه حشمتی محمدرضا کسایی

چکیده اثرات افزودن هر یک از مواد نرم­کننده (سوربیتول، گلیسرول یا لاکتیک اسید) در محدوده غلظت %40- 0 برروی خواص مکانیکی و نفوذپذیری به بخار آب واکسیژن لایه­های نازک بر پایه کازئین مورد مطالعه قرار گرفت. مناسبترین فرمولاسیون که دارای نفوذ پذیری به بخارآب )  (wvp ونفوذ پذیری به اکسیژن ((op و انعطاف پذیری اپتیمم بودند انتخاب شدند. مقادیر wvp، op و خواص مکانیکی برای بهترین فرمولاسیون لایه­های نازک ب...

Background and Objectives: Preparation and evaluation of nanocomposite films have become prevalent in recent years. Depending on the purpose of using the film, and considering the effects and interaction effects of nanomaterial and other modifiers on the film properties, the amounts of nanomaterials and modifiers should be optimized. The effects of montmorillonite (MMT), glycerol (GL), and thei...

Journal: :Carbohydrate polymers 2013
Mehran Ghasemlou Nahal Aliheidari Ronak Fahmi Saeedeh Shojaee-Aliabadi Behnam Keshavarz Marlene J Cran Ramin Khaksar

Corn starch-based films are inherently brittle and lack the necessary mechanical integrity for conventional packaging. However, the incorporation of additives can potentially improve the mechanical properties and processability of starch films. In this work two essential oils, Zataria multiflora Boiss (ZEO) or Mentha pulegium (MEO) at three levels (1%, 2% and 3% (v/v)), were incorporated into s...

2014
Qingjie Sun Tingting Xi Ying Li Liu Xiong

The characterization of corn starch (CS) films impregnated with CaCO3 nanoparticles was investigated. Criteria such as morphology, crystallinity, water vapor permeability (WVP), opacity, and mechanical properties were the focus of the investigation. It was found that the CaCO3 contents had significant effects on the tensile properties of the nanocomposite films. The addition of CaCO3 nanopartic...

2013
Khaoula Khwaldia

Hydroxypropyl methylcellulose (HPMC)–coated papers without plasticizer and plasticized with polyols were prepared, and the effects of coating weight, different plasticizers (glycerol (GLY), sorbitol (SOR), and polyethylene glycol (PEG)), and plasticizer contents (20% to 50%) on the physical and mechanical properties of the resulting biopolymer-coated papers were studied. Coating weight was the ...

Journal: :Industrial Crops and Products 2021

Residual hemp (Cannabis sativa) hurd fibers obtained from hydrothermal, carbonate, and kraft treatments were the resources used to obtain lignocellulosic nanofibers (LCNF) by using an ultra-fine friction grinder. The morphological, crystallinity, chemical characteristics of nanocellulose films carried out SEM, XRD, EDX ToF-SIMS. Water barrier properties same measured in terms water contact angl...

Journal: :International Journal of Biological Macromolecules 2021

Cold plasma is an innovative strategy to strengthen the polysaccharide-based films characteristics. This study evaluated effects of dielectric barrier discharge (DBD) on hydrophilic character, water vapor permeability (WVP), and tensile properties corn starch-based films. Starch were exposed processing operating at excitation frequency 200 Hz for 10, 15, 20 min. DBD resulted in further enhanced...

Abdorasul Oromiehi Babak Ghanbarzadeh,

     Zein is one of the best biopolymer for edible film making and sugars are natural plasticizers for biopolymers. In this research, sugars (fructose, galactose and glucose) at three levels (0.5, 0.7, 1 g/g of zein) were used as plasticizers for zein protein films and their water vapor permeability (WVP), oxygen permeability (OP) and atomic force microscopy (AFM) topography were studied. The p...

A. Sharifan F Hedayati Rad F. Khodaiyan S. E. Hossaini

The non-biodegradable nature of plastic packaging has brought about an attention in bio-basedpackaging materials. Edible composite films were prepared using soy protein concentrate (SPC) and pullulan(PUL) biopolymer at five different ratio (100:0; 70:30; 50:50; 30:70 and 0:100) with glycerol as plasticizer bycasting-evaporation method. The thickness, mechanical properties, water vapor permeabil...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید