Green and efficient removal of cadmium from rice flour using natural deep eutectic solvents.

Abstract:

:Natural deep eutectic solvents (NADESs) constitute a novel class of biodegradable and inexpensive solvents. In this study, twenty choline chloride- and glycerol-based NADESs were prepared and investigated as washing agents in the removal of cadmium (Cd) from rice flour for the first time. Choline chloride-based NADESs demonstrated good Cd removal (51%-96%). A natural, biodegradable surfactant, saponin, was mixed with the NADESs to enhance their efficiency. No increase in Cd removal was observed when glycerol-based NADESs were combined with 1% saponin; however, synergistic effects between saponin and choline chloride-based NADESs were observed during the washing process and >99% Cd was removed using NADES-saponin mixtures. Moreover, NADESs washing process did not affect the main chemical components or structure of rice flour. The mechanism of Cd removal by NADESs and regeneration of Cd-contaminated NADESs were also explored. The study presents a green and efficient way of removing Cd from contaminated rice.

journal_name

Food Chem

journal_title

Food chemistry

authors

Huang Y,Feng F,Chen ZG,Wu T,Wang ZH

doi

10.1016/j.foodchem.2017.10.060

subject

Has Abstract

pub_date

2018-04-01 00:00:00

pages

260-265

eissn

0308-8146

issn

1873-7072

pii

S0308-8146(17)31688-6

journal_volume

244

pub_type

杂志文章