Characterization, in vitro binding properties, and inhibitory activity on pancreatic lipase of β-glucans from different Qingke (Tibetan hulless barley) cultivars.

Abstract:

:In order to explore Qingke β-glucans as functional food ingredients for prevention of obesity, the physicochemical structures, in vitro binding properties, and inhibitory activities on pancreatic lipase of β-glucans from three different Qingke cultivars, including Ganyucang (black), Dingqing (blue), and Zangqing 320 (white), were investigated and compared. Results showed that molecular weights, particle sizes, and intrinsic viscosities of β-glucans from colored (black and blue) Qingke cultivars were much higher than those of white Qingke β-glucans, respectively. In addition, the constituent monosaccharides of β-glucans from colored Qingke cultivars were determined as arabinose, xylose, glucose, and galactose, and glucose was the dominant monosaccharide. Furthermore, colored Qingke β-glucans exerted strong fat binding, cholesterol binding, and bile-acid binding capacities, as well as inhibitory activities on pancreatic lipase, which were much higher than those of white Qingke β-glucans. Indeed, the fat binding, cholesterol binding, and bile-acid binding capacities, as well as the inhibitory activities on pancreatic lipase of Qingke β-glucans were positively associated with their molecular weights and intrinsic viscosities. Results are beneficial for better understanding of the structure-function relationship of Qingke β-glucans, and β-glucans from colored Qingke cultivars (Ganyucang and Dingqing) could be further explored as functional food ingredients for prevention of obesity.

journal_name

Int J Biol Macromol

authors

Guo H,Lin S,Lu M,Gong JDB,Wang L,Zhang Q,Lin DR,Qin W,Wu DT

doi

10.1016/j.ijbiomac.2018.09.023

subject

Has Abstract

pub_date

2018-12-01 00:00:00

pages

2517-2522

issue

Pt B

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(18)32585-6

journal_volume

120

pub_type

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