نتایج جستجو برای: water vapor permeability wvp

تعداد نتایج: 617617  

Journal: :Revista Mexicana De Ingenieria Quimica 2022

Starch is one of the most used polysaccharides in formulation Edible Films (EFs). This work aimed to develop starch-based EFs employing extrusion technology as a pretreatment casting technique and evaluate storage relative humidity (RH) effect determine their possible application food coating. Corn starch mixture plasticizers (sorbitol glycerol) were processed twin-screw extruder. The was for f...

Journal: :nutrition and food sciences research 0
akbar jokar fars agricultural and natural resources research and education center, shiraz, zarghan. mohamad hossein azizi college of agriculture, tarbiat modares university, tehran, iran zohre hamidi esfehani college of agriculture, tarbiat modares university, tehran, iran

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: :Journal of Food Engineering 2023

In the present work, faba bean protein (FBP) films plasticized with glycerol and reinforced different amounts (2.5, 5.0, 7.5 10% by weight of FBP) lignin extracted from pine cones (PL) have been obtained solution casting. The results showed an elongation at break 111.7% addition 5% PL to FBP film, which represents increase 107% compared control film. On other hand, it was observed thermogravime...

2007
PAUL R. FIELD ROBERT WOOD

Composite mean fields and probability distribution functions (PDFs) of rain rate, cloud type and cover, cloud-top temperature, surface wind velocity, and water vapor path (WVP) are constructed using satellite observations of midlatitude cyclones from four oceanic regions (i.e., the North Pacific, South Pacific, North Atlantic, and South Atlantic). Reanalysis surface pressure fields are used to ...

Journal: :مهندسی بیوسیستم ایران 0
لیلا ابوالقاسمی دانشجوی کارشناسی ارشد، دانشگاه تبریز بابک قنبرزاده دانشیار، دانشگاه تبریز جلال دهقان نیا استادیار، دانشگاه تبریز علی اکبر انتظامی استاد شیمی، دانشگاه تبریز

carboxymethyl cellulose (cmc)-polyvinyl alcohol (pvoh) blend film was produced through casting. cellulose nanowhisker (cnw) was produced by means of acid hydrolysis of cotton linter and cmc-pvoh-cellulose nanowhiskers through which fully degradable bionanocomposites were prepared. prepared nanowhisker suspension contained rod like particles averaging lengths of 240 nm and diameters of 13 nm. an...

Journal: :journal of agricultural science and technology 2010
s. saremnezhad m. h. azizi m. barzegar s. abbasi e. ahmadi

there has been a renewed interest in edible films made of renewable and natural polymers such as protein, polysaccharide and lipids. natural polymers derived from natural sources like food protein, offer the greatest opportunities because of their biodegradability and their ability to supplement nutritional value of foods. faba bean is a valuable source of protein and is cultivated in large qua...

Journal: :علوم و تکنولوژی پلیمر 0
روناک غلامی تبریز، دانشگاه تبریز، دانشکده کشاورزی، گروه علوم و صنایع غذایی، کد پستی 16471-51666 جلال دهقان نیا تبریز، دانشگاه تبریز، دانشکده کشاورزی، گروه علوم و صنایع غذایی، کد پستی 16471-51666 بابک قنبرزاده تبریز، دانشگاه تبریز، دانشکده کشاورزی، گروه علوم و صنایع غذایی، کد پستی 16471-51666

the aim of this study was to investigate the rate of water vapor permeability (wvp) and moisture sorption of starch-montmorillonite (mmt) nanocomposite films. the nanocomposite films were prepared using the casting method andglycerol was used as a plasticizer. the effect of glycerol concentration on wvp of the films was determined at 25°c with a relative humidity of 0-99% (inside and outside of...

Journal: :journal of food and bioprocess engineering 0
sara abbasi rad transfer phenomena laboratory (tpl), department of food science, technology and engineering, faculty of biosystems engineering, university of tehran gholamreza askari transfer phenomena laboratory (tpl), department of food science, technology and engineering, faculty of biosystems engineering, university of tehran

the effect of dry material, glycerol and ratio of water to seed in alyssum homalocarpum films on their thickness, transparency, moisture content, tensile strength, elongation and water vapor permeability was investigated using mixture response surface methods. dry material and glycerol were important factors influencing tensile strength, elongation and water vapor permeability. ratio of water t...

Gholamreza Askari, Sara Abbasi Rad

The effect of dry material, glycerol and ratio of water to seed in alyssum homalocarpum films on their thickness, transparency, moisture content, tensile strength, elongation and water vapor permeability was investigated using mixture response surface methods. Dry material and glycerol were important factors influencing tensile strength, elongation and water vapor permeability. Ratio of water t...

Journal: :Polymer Testing 2021

Potassium permanganate (KMnO4) is a dominant ethylene (C2H4)-scavenger extensively used in fresh horticultural commodities, mainly climacteric fruit, to prolong their shelf life. This material has been traditionally utilized as C2H4-permeable sachet for inclusion into packages of produces. New formulation strategies are required polymeric materials develop nanocomposites with scavenging potenti...

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