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- Title
Vegetable Substitutes Waxes.
- Authors
Jianu, C.; Ardelean, Cristina; Cocan, Ileana; Alexa, Ersilia; Mşscă, Corina; Jianu, I.
- Abstract
Natural vegetable waxes (esters of monocarboxylic fatty acid with primary monocarboxylic fatty alcohols, both saturated with linear hydrocarbonated chains) widespread in composition of horticultural products, with a major role in their physiology as a barrier to controlled transfer of water and other metabolites. Extruded products can be found on the foliar surface of fruits (pruine, suberine, cutine, etc.) where they exercise a protective function. The range constantly ascending to the large scale application as a film requires the diversification of the graded range by accessing the synthetic substitutes that requires toxicity demands and also, thermal or mass transfer performances. Polyoxyethylene chains with variable oligomerisation degree grefted with alcohols (phenols) with medium hydrocarbonate chain (C8, C9) can be esterified with fatty acids (C16, C18) saturated and / or polyunsaturated obtained through the ecological integrated recovery of seed material from tomatoes processing [C14(0Δ) (6,34%); C16(0Δ) (31,6%); C18(0Δ) (21,15%); C18 (1Δ) (40,81%)] grown in areas from west of Romania. Lipidic fraction was processed by solid/liquid repeated extraction with petroleum ether (p.f.=40-60°C) (Soxhlet method) and classic analytical evaluated (refractive index, specific weight, iodine, saponification index) and gaschromatographic (column). "Homogeneous" polyoxyethylene chains with medium/large oligomerisation degree (n=3,9,18) processed by the Williamson method "step by step" from dyethyleneglycol, further grafted to 2- ethyl-hexyl alcohol respectively nonyiphenol, were purified and characterized chemically and physical - chemical (colloidal).
- Subjects
ROMANIA; FATTY acids; FATTY alcohols; HORTICULTURAL products; PHYSIOLOGICAL research; METABOLITES; TOXICITY testing; POLYETHYLENE glycol; TOMATOES
- Publication
Bulletin of the University of Agricultural Sciences & Veterinary Medicine Cluj-Napoca. Agriculture, 2009, Vol 66, Issue 2, p327
- ISSN
1843-5246
- Publication type
Article