title: Starch digestibility and bioactivity of high altitude hulless barley.
abstract: This study was aimed at evaluating the effects of growth altitude (97-3500m) on the starch digestibility and bioactivity of hulless barley cultivars grown in India. All the high altitude cultivars (between 1200 and 3500m above sea level) displayed 7.5-30.8% higher levels of total β-glucan, 39.8-68.6% higher arabinoxylan content, 11.0-60.9% higher total anthocyanin content and 16.6-43.2% higher metal chelating activity than the cultivars grown in plains (97-126m altitude). The soluble β-glucan and arabinoxylan content of cultivars ranged from 2.0% to 2.8% and 0.08% to 0.19%. A positive correlation between slowly digestible starch (SDS) and insoluble β-glucan and total arabinoxylan content was observed. Cultivars grown at higher altitudes exhibited higher bioactive potential and may find better utilization in nutraceutical foods.
authors.affiliation: Department of Food Science and Technology, Guru Nanak Dev University, Amritsar 143005, India.
authors.forename: Jessy
authors.initials: J
authors.lastname: Moza
authors.affiliation: Department of Food Science and Technology, Guru Nanak Dev University, Amritsar 143005, India. Electronic address: hsgujral7@yahoo.co.in.
authors.forename: Hardeep Singh
authors.initials: HS
authors.lastname: Gujral
mesh_terms: D001467:Hordeum / Q000737:chemistry*; D007194:India; D013213:Starch / Q000737:chemistry*; D047071:beta-Glucans / Q000378:metabolism*
chemical_list: D047071:beta-Glucans; D013213:Starch
keywords: Altitude; Arabinoxylan; Hulless barley; Starch digestibility; β-Glucan