The Potential of Alkyl Polyglucosides and Polyethylene Glycol Glucosides Coatings for Improving the Storage and Shelf-Life of Pineapples

2004 ◽  
Vol 41 (3) ◽  
pp. 109-112 ◽  
Author(s):  
Xin Jin ◽  
Shufen Zhang ◽  
Jinzong Yang ◽  
Yanke Li
Keyword(s):  
Polyethylene Glycol ◽  
Shelf Life ◽  
Alkyl Polyglucosides

scholarly journals Development of Breathable Pebax®/PEG Films for Optimization of the Shelf-Life of Fresh Agri-Food Products

Membranes ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 692
Author(s):  
Thibaut Préfol ◽  
Olivier Gain ◽  
Guillaume Sudre ◽  
Fabrice Gouanvé ◽  
Eliane Espuche
Keyword(s):  
Polyethylene Glycol ◽  
Shelf Life ◽  
Transport Properties ◽  
Food Packaging ◽  
Weight Ratio ◽  
Ternary Blend ◽  
Scanning Calorimetry ◽  
Wide Range ◽  
Fresh Products ◽  
Over Time

In this work, thin transparent breathable films were prepared for food packaging applications. The films were obtained by the solvent casting method from both the binary blends Pebax® MH1657 copolymer/ hydroxyl-terminated polyethylene glycol (PEGOH) and Pebax® MH1657/polyethylene glycol dimethyl ether (PEGDME) as well as the ternary blend Pebax® MH1657/PEGOH/PEGDME with a 50/50 and 37.5/62.5 PEGOH/PEGDME weight ratio for additive amounts comprised between 0 and 50 wt.%. The microstructure of these materials was investigated by differential scanning calorimetry (DSC) and wide-angle X-ray scattering (WAXS) analyses. Regardless of the PEG’s nature, for a PEG amount inferior to 30 wt.%, the Pebax® and PEG phases were totally miscible. For higher amounts, a phase separation was obtained. In the presence of PEG, a decrease in crystallinity was obtained. The effects of the nature and amount of PEG on the thermo-mechanical, hydration, and gas (CO2, O2) transport properties were investigated. A study of the film’s stability in terms of composition over time was also performed. From this work, a wide range of films could be proposed with a stable composition over time and adjustable mechanical and gas transport properties for the prolongation of the shelf-life of highly breathable fresh products.

Immunocytochemical detection of hepatic carbohydrate metabolic enzymes: Improved resolution with polyethylene glycol embedding and visio-bond semithin sections

1992 ◽  
Vol 50 (1) ◽  
pp. 792-793
Author(s):  
Kuixiong Gao ◽  
Randal E. Morris ◽  
Bruce F. Giffin ◽  
Robert R. Cardell
Keyword(s):  
Polyethylene Glycol ◽  
Glycogen Phosphorylase ◽  
Phosphoenolpyruvate Carboxykinase ◽  
Glycogen Synthase ◽  
Metabolic Enzymes ◽  
Silver Stain ◽  
Accurate Localization ◽  
Immunocytochemical Detection ◽  
Semithin Sections ◽  
Parenchymal Cells

Several enzymes are involved in the regulation of anabolic and catabolic pathways of carbohydrate metabolism in liver parenchymal cells. The lobular distribution of glycogen synthase (GS), phosphoenolpyruvate carboxykinase (PEPCK) and glycogen phosphorylase (GP) was studied by immunocytochemistry using cryosections of normal fed and fasted rat liver. Since sections of tissue embedded in polyethylene glycol (PEG) show good morphological preservation and increased detectability for immunocytochemical localization of antigenic sites, and semithin sections of Visio-Bond (VB) embedded tissue provide higher resolution of cellular structure, we applied these techniques and immunogold-silver stain (IGSS) for a more accurate localization of hepatic carbohydrate metabolic enzymes.

Directional observation on lipid of male nectary of Lindera megaphylla hemsl. by the rapid embedding method with polyethylene glycol (PEG)

1990 ◽  
Vol 48 (3) ◽  
pp. 718-719
Author(s):  
Dai Dalin ◽  
Guo Jianmin
Keyword(s):  
Electron Microscope ◽  
Polyethylene Glycol ◽  
Chemical Reaction ◽  
Traditional Method ◽  
Osmium Tetroxide ◽  
Unsaturated Lipid ◽  
Embedding Method ◽  
Long Period ◽  
New Methods

Lipid cytochemistry has not yet advanced far at the EM level. A major problem has been the loss of lipid during dehydration and embedding. Although the adoption of glutaraldehyde and osmium tetroxide accelerate the chemical reaction of lipid and osmium tetroxide can react on the double bouds of unsaturated lipid to from the osmium black, osmium tetroxide can be reduced in saturated lipid and subsequently some of unsaturated lipid are lost during dehydration. In order to reduce the loss of lipid by traditional method, some researchers adopted a few new methods, such as the change of embedding procedure and the adoption of new embedding media, to solve the problem. In a sense, these new methods are effective. They, however, usually require a long period of preparation. In this paper, we do research on the fiora nectary strucure of lauraceae by the rapid-embedding method wwith PEG under electron microscope and attempt to find a better method to solve the problem mentioned above.

Polyethylene glycol-mediated direct gene transfer in Nicotiana spp.

1992 ◽  
Vol 85 (2) ◽  
pp. 345-351 ◽  
Author(s):  
Gokarna B. Gharti-Chhetri ◽  
Wichai Cherdshewasart ◽  
Jocelyne Dewulf ◽  
Michel Jacobs ◽  
loan Negrutiu
Keyword(s):  
Polyethylene Glycol ◽  
Gene Transfer ◽  
Direct Gene Transfer ◽  
Direct Gene

A Man's Shelf Life

2007 ◽  
Author(s):  
Darren Braun
Keyword(s):  
Shelf Life

TWO LITERS OF POLYETHYLENE GLYCOL (PEG) WITH 15 MG OF BISACODYL VERSUS 4 LITERS OF PEG FOR BOWEL PREPARATION TO COLONOSCOPY

2018 ◽  
Author(s):  
A Elmekkaoui ◽  
M Oualgouh ◽  
A Zazour ◽  
W Khannoussi ◽  
G Kharrasse ◽  
...  
Keyword(s):  
Polyethylene Glycol ◽  
Bowel Preparation
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