U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

Thiamine content and technological quality properties of parboiled rice treated with sodium bisulfite: Benefits and food safety risk

Author:
Nathan Levien Vanier, Ricardo Tadeu Paraginski, Jose De J. Berrios, Leandro da Conceição Oliveira, Moacir Cardoso Elias
Source:
Subtropical plant science 2015 v.41 pp. 98-103
ISSN:
0485-2044
Subject:
adverse effects, color, consumer acceptance, food safety, gelatinization, nutritive value, parboiling, rice, risk, soaking, sodium bisulfite, staple foods, thiamin
Abstract:
Rice is a staple food for more than half of the world's population. The parboiling process is known to increase the nutritional value of milled rice, but the process darkens the grains, with a corresponding negative effect on consumer acceptability. The aim of this study was to evaluate the effects of using different concentrations of sodium bisulfite (0, 0.2, 0.4, 0.6, 0.8, 1.0%) during the soaking step of rice parboiling process on the thiamine content and technological properties of parboiled rice. Moreover, the residual sulfite content in parboiled grains was also evaluated. The lowest concentration of 0.2% sodium bisulfite was able to significantly (p<0.05) promote a whiter colour, a decrease in the percentage of stained grains, and an increase in the percentage of completely gelatinized grains in the parboiled rice, compared to rice without sodium bisulfite treatment. However, the use of sodium bisulfite significantly (p<0.05) reduced the thiamine content, which is considered a risk associated with the treatment.
Agid:
5427556