title: The efficacy of kaolin particle film on oil quality indices of olive trees (Olea europaea L.) cv 'Zard' grown under warm and semi-arid region of Iran.
abstract: Kaolin particle film (0%, 3% and 6%; w/v), as an antitranspirant treatment, was applied to mature 'Zard' olive trees (Olea europaea L.). Olive oil was extracted from harvested fruit and fatty acid composition and other oil quality indices of the fruit assessed over crop seasons. Kaolin increased chlorophyll and carotenoid contents, but decreased peroxide and iodine values, and UV absorbance extinction coefficients, of the oil. The highest palmitic acid was observed in the oil obtained from untreated trees (17%). Kaolin increased oleic acid up to 65% and 64% in the first and second crop seasons, respectively, but decreased linoleic and linolenic acid contents. Monounsaturated acids (65%) and oleic acid/linoleic acid ratios (4) were higher in oil obtained from kaolin treated than untreated trees. Therefore it can be expected that extracted olive oil from kaolin treated trees has a higher oxidative stability and shelf life than untreated trees.
authors: Department of Horticultural Science, Tarbiat Modares University (TMU), P.O. Box 14115-336, Tehran, Iran.
authors: Esmaeil
authors: E
authors: Khaleghi
authors: Department of Horticultural Science, Tarbiat Modares University (TMU), P.O. Box 14115-336, Tehran, Iran. Electronic address: arzani_k@modares.ac.ir.
authors: Kazem
authors: K
authors: Arzani
authors: Department of Horticultural Science, Shahid Chamran University, Ahvaz, Iran.
authors: Norollah
authors: N
authors: Moallemi
authors: Department of Food Science and Technology, Tarbiat Modares University, P.O. Box 14115-336, Tehran, Iran.
authors: Mohsen
authors: M
authors: Barzegar
mesh_terms: D002734:Chlorophyll; D005227:Fatty Acids / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry*; D007492:Iran; D007616:Kaolin / Q000737:chemistry*; D031658:Olea / Q000254:growth & development*; D000069463:Olive Oil / Q000737:chemistry*
chemical_list: D005227:Fatty Acids; D000069463:Olive Oil; D002734:Chlorophyll; D007616:Kaolin
keywords: Carotenoid; Cholorophyll; Fatty acid composition; Kaolin particle film; Oil quality indices; Olive; Peroxide value