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Physico-chemical Characteristics, Fatty Acid, Composition of Grape Seed Oil and Phenolic Compounds of Whole Seeds, Seeds and Leaves of Red Grape in Libya

  • Hussein, Sultana
  • Abdrabba, Salem
This research was carried out on grape by-product of grape cultivar namely (Sultana) obtained from El-Bieda city, (El-Jabal-El-Akhder region) in Libya, harvested at the optimum maturity to throw the light on the physico-chemical characteristics, fatty acid composition of grape seed oil and phenolic compounds of whole seeds, seeds and leaves of grape. The oil yield from the seeds of grape was 16.63%. The physicochemical characteristics namely specific gravity, refractive index, free fatty acid, peroxide value, Thiobarbituric acid, ρ-anisidine, totox value, iodine number, saponification number which were determined and the tocopherols content (as α-tocopherol), was 44.50 mg/100g. It could be observed that the fatty acid composition for the seeds of red grape had high content of polyunsaturated fatty acid especially linoleic \acid (55.30%) followed by oleic acid (25.81%) while palmitic acid was the dominant saturated fatty acid (11.87%). Furthermore the phenolic compounds of whole seeds, seeds consist of eleven of polyphenol compounds with different ratio were identified in all parts including vanillic acid, catechin, protocachoic acid, coumarin, gallic acid, ferulic acid, catechol, chlorogenic acid, synergic acid, pyrogallol and caffiec acid.
Select Volume / Issue:
Year:
2015
Type of Publication:
Article
Keywords:
Fatty Acid; Phenolic Compounds; Sultana Grape
Journal:
IJASM
Volume:
2
Number:
5
Pages:
175-181
Month:
September
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