نتایج جستجو برای: Synthetic antioxidant

تعداد نتایج: 233167  

Journal: :فصلنامه علمی پژوهشی گیاهان دارویی 0
m khaki ma sahari food technology department, college of agriculture, tarbiat modares university, tel: +98 – 21 – 48292328, fax: +98- 21- 48292200 m barzegar

background: essential oils of medicinal plants such as chamomile are very complex natural mixtures which can contain compounds at quite different concentrations and some of their components have antioxidant and antimicrobial activities in foodstuff. objective: the antioxidant and antimicrobial effects of chamomile essential oil in cake preparation were evaluated during 75 days of storage. metho...

M Barzegar , M Khaki , MA Sahari,

 Background: Essential oils of medicinal plants such as chamomile are very complex natural mixtures which can contain compounds at quite different concentrations and some of their components have antioxidant and antimicrobial activities in foodstuff. Objective: The antioxidant and antimicrobial effects of chamomile essential oil in cake preparation were evaluated during 75 days of storag...

Journal: :فصلنامه علمی پژوهشی گیاهان دارویی 0
z sabouri m barzegar department of food science and technology, tarbiat modares university, p.o.box: 14115-336, tehran, iran, tel: + 98 – 21 – 48292323, fax: + 98 – 21 - 48292200 ma sahari h naghdi badi

background: oxidation of lipids causes reduction of different properties of products that contains lipids. nowadays, there is a growing demand for the natural antioxidants due to the harmful effects of synthetic antioxidants such as bha, bht and tbhq. objective: in this study, extract of aerial parts of echinacea purpurea l. was used instead of synthetic antioxidants in cake then, antioxidant a...

Background & Aims: Due to the adverse effects of synthetic antioxidants, there is a great desire to use herbs because of its antioxidant properties. This study was performed to examine the antioxidant effects of (Pimpinella affinis) as an alternative to synthetic antioxidants. Materials & Methods: Total phenolic, contents were measured with folin ciocalteu method. The antioxidant capacity...

K.J. Shetty, N.S.  Kumari, P. Shetty, Sh. Pooja,

Background: The herb feverfew (Tanacetum parthenium L., Asteraceae) has an ancient reputation as an effective anti-inflammatory, analgesic, antipyretic, and anti-asthmatic agent. Parthenolide a gemacranolide-type sesquiterpene lactone is the major constituent of European feverfew. Materials and Methods: The present study was intended to evaluate the in vivo antioxidant potential and radioprotec...

H Naghdi Badi , M Barzegar, MA Sahari , Z Sabouri,

 Background: Oxidation of lipids causes reduction of different properties of products that contains lipids. Nowadays, there is a growing demand for the natural antioxidants due to the harmful effects of synthetic antioxidants such as BHA, BHT and TBHQ. Objective: In this study, extract of aerial parts of Echinacea purpurea L. was used instead of synthetic antioxidants in cake then, ant...

Journal: :پژوهش های علوم و صنایع غذایی ایران 0
sahar lashgari majid javanmard

nowadays, the use of natural antioxidants as alternative antioxidants is more acceptable than synthetic antioxidants mainly for negative effects such as carcinogenicity and toxicity. this has led to an increasing interest in the search for natural antioxidants. the objectives of this study were to measure total crude phenolic compounds and in sorghum grain as natural antioxidant sources, to det...

Journal: :jundishapur journal of natural pharmaceutical products 0
sayed ahmad emami department of pharmacognosy, school of pharmacy, mashhad university of medical sciences, mashhad, ir iran ali shahani department of pharmacognosy, school of pharmacy, mashhad university of medical sciences, mashhad, ir iran mohammad hassanzadeh khayyat pharmaceutical sciences research center, department of medicinal chemistry, school of pharmacy, mashhad university of medical sciences, mashhad, ir iran; pharmaceutical sciences research center, department of medicinal chemistry, school of pharmacy, mashhad university of medical sciences, p.o. box: 91775-1365, mashhad, ir iran. tel: +98-511882325565, fax: +98-5118823251

results the results of the study, using the two methods, showed that all methanol extracts of leaves and fruits of the six species possessed antioxidant activity. the antioxidant activity of the samples was compared with the antioxidant activities of butylatedhydroxytoluene (bht), as a synthetic antioxidant and α-tocopherol as a natural antioxidant. methanol extractions of pinus spp. leaves and...

Journal: :journal of agricultural science and technology 2014
e. ranjbar nedamani a. sadeghi mahoonak m. ghorbani m. kashaninejad

the aim followed in the present study was to evaluate the antioxidant activity of individual vs. combined extracts of rosemary leaves and oak fruit to detect the possible interactions in their antioxidant activity following combination and in order to find a way to use oak fruit natural antioxidants as an available massive source in iran. towards this end, methanolic extracts of rosemary and oa...

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