مقالههای M.M. Eid
توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقالههای نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده میشوند.
اطلاعات انتشار: World Applied Sciences Journal، سي و دوم،شماره۱۱، ۲۰۱۴، سال ۰
تعداد صفحات: ۸
Olive mill wastewater (OMWW) contains a substantial amount of valuable antioxidant phenols that can be recovered for industrial applications as food additives and pharmaceuticals. The present study aimed to extracting different phenolic OMW fractions and determining their antiradical potential as well as their effect on hexanal. Total phenolic content was measured according to the Folin–Ciocalteu method of OMWW either crude or acidified samples while the antiradical activities were assessed using 1, 1' diphenyl–2–picryl–hydrazyl radical (DPPH0) and –carotene bleaching tests. HPLC analysis showed that eight compounds were identified: phenyl acids (gallic acid, vanillic acid, p–qumaric acid, caffeic acid, ferulic acid), phenyl alcohols (hydroxytyrosol, tyrosol), as well as rutin. Rancimat method using sunflower oil (SFO) as model system showed that antioxidant activity increased by 27.45% with SFO treated with 175ppm extracted phenloic compound compared with control sample. Prooxidant effect has obtained when increase concentrations to 350 and 525 ppm of phenolic compounds extracted from OMWW. The OMWW extract inhibited significantly (P=0.05) hexanal formation in SFO oil. (81.82% inhibition).
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