Physicochemical and thermal characteristics of Australian chia seed oil.

Abstract:

:Physicochemical and thermal characteristics of Australian chia seed oil (CSO) were studied. The specific gravity, viscosity and refractive index of CSO at ambient temperature were 0.93, 43.2mPa.s and 1.48, respectively. The acid, peroxide, saponification and iodine values and unsaponifiable matter content of CSO were 2.54gKOH/kg oil, 4.33meqO2/kg oil, 197gKOH/kg oil, 204gI2/kg oil and 1.12%, respectively. α-linolenic acid is the most abundant fatty acid comprising (64.39% of total oil) followed by linoleic acid (21.46%), while saturated fatty acid content is less than 10%. This CSO contained twelve triacylglycerols (TAGs) out of which trilinolenin (αLnαLnαLn) was the most abundant comprising 33.2% of total TAG. Melting point and melting enthalpy of CSO were -34°C and 77.48J/g, respectively. CSO remained stable up to 300°C with negligible degradation. Due to these physicochemical and thermal properties, CSO is an excellent source of essential fatty acids for food industries.

journal_name

Food Chem

journal_title

Food chemistry

authors

Timilsena YP,Vongsvivut J,Adhikari R,Adhikari B

doi

10.1016/j.foodchem.2017.02.021

subject

Has Abstract

pub_date

2017-08-01 00:00:00

pages

394-402

eissn

0308-8146

issn

1873-7072

pii

S0308-8146(17)30208-X

journal_volume

228

pub_type

杂志文章