کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7589561 | 1492091 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Antioxidative free and bound phenolic constituents in botanical fractions of Indian specialty maize (Zea mays L.) genotypes
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کلمات کلیدی
QPMQuercetin (PubChem CID: 5280343)Kaempferol (PubChem CID: 5280863)Isoferulic acid (Pubchem CID: 736186)Antioxidant - آنتی اکسیدانSyringic acid (PubChem CID: 10742) - اسید سیرینژیک (PubChem CID: 10742)Ferulic acid (PubChem CID: 445858) - اسید فرولیک (PubChem CID: 445858)Vanillic acid (PubChem CID: 8468) - اسید وانیلیک (PubChem CID: 8468)Caffeic acid (PubChem CID: 689043) - اسید کافئیک (PubChem CID: 689043)Phenolic acids - اسیدهای فنولیکPopcorn - ذرت بو دادهSweet corn - ذرت شیرینFlavonoids - فلاونوئیدهاVitamin E - ویتامین E
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Specialty maize genotypes viz. QPM (quality protein maize), Baby corn, Popcorn and Sweet corn, which are usually consumed in whole forms can be good supplements of phenolic antioxidants. Botanical fractions of these maize genotypes were analyzed to explore the distribution of free and bound phenolics. HPLC and ESI-MS/MS results indicated the presence of vanillic, syringic, p-hydroxybenzoic, caffeic, p-coumaric, ferulic and isoferulic acids along with cyanidin-3-O-glucoside, kaempferol and quercetin. Germs of maize samples contained significantly higher free phenolics than pericarps, whereas, pericarps contained 74-83% of bound ones. QPM and Popcorn contained only 3% free phenolics whereas, Baby corn and Sweet corn had 14-17%. Unlike in peroxide scavenging and reducing capacity, anti-radical capacity of free phenolics of germs was significantly higher than that of pericarps. Free phenolics contributed 0.2-1.65%, 2-5% and 42-49% in anti-radical, peroxide scavenging and reducing capacity, respectively. Among lipophilic tocochromanols γ-tocopherol was the most abundant isomer in the samples among which Sweet corn contained the most (84.2 μg/g). Data showed that specialty maize genotypes are rich sources of hydrophilic and lipophilic bioactives and are natural antioxidants.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 201, 15 June 2016, Pages 298-306
Journal: Food Chemistry - Volume 201, 15 June 2016, Pages 298-306
نویسندگان
Amit K. Das, Vasudeva Singh,