scholarly journals Determination of perchlorate and its distribution in unhusked rice in China

2022 ◽  
Author(s):  
Changxin Shen ◽  
Lian Liu ◽  
Xiaoyao Yin ◽  
Fengqin Tu ◽  
Kejia Wu ◽  
...  
Keyword(s):  
Rice Husk ◽  
Rice Bran ◽  
Exposure Risk ◽  
Milled Rice ◽  
Rice Samples

Abstract Perchlorate concentrations in 387 unhusked rice samples from 15 main producing provinces in China were investigated by HPLC–MS/MS. The results indicated that perchlorate displays a mean level of 17.17 μg/kg in unhusked rice samples. Intriguingly, we also found that perchlorate is mainly observed in rice husk among of these collected unhusked rice samples, while less observed in rice bran and milled rice. Specifically, the perchlorate levels in rice were found in the husks (73.61%), bran (10.09%) and milled rice (19.52%), respectively. Our results indicated that there is no significantly perchlorate exposure risk in edible milled rice. We suggested that perchlorate in rice can be greatly removed if deep processed unhusked rice and there is no perchlorate exposure risk in edible milled rice.

scholarly journals Comparison of β-Glucan Content in Milled Rice, Rice Husk and Rice Bran from Rice Cultivars Grown in Different Locations of Thailand and the Relationship between β-Glucan and Amylose Contents

Molecules ◽  
2021 ◽  
Vol 26 (21) ◽  
pp. 6368
Author(s):  
Pattraporn Phuwadolpaisarn
Keyword(s):  
Rice Husk ◽  
Rice Bran ◽  
Amylose Content ◽  
Rice Paddy ◽  
Rice Cultivars ◽  
Milled Rice ◽  
Strong Negative Correlation ◽  
The North ◽  
New Information ◽  
Cereal Grain

β-glucan is a dietary fiber that is beneficial to human health, and its content varies according to its different parts, type of cereal grain, and growing environment. In this study, the β-glucan of milled rice, rice husk, and rice bran fractions, as well as the amylose content of milled rice fraction, from 38 selected rice-paddy grains from six regions of Thailand were quantitatively determined. The milled rice of the Sakon Nakhon (SN) cultivar grown in the northeast contained the highest β-glucan content (0.88 ± 0.03%), followed by the milled rice of the Jow Khao Chiangmai (JKC) cultivar (0.71 ± 0.03%) and rice bran of the Sew Mae Jan (SMJ) cultivar (0.67 ± 0.03%) grown in the north. The results reveal that the rice cultivars from each region showing variation in the β-glucan level in each fraction, which is mainly found in milled rice and rice bran, are similar to those found in other cereal grains, although low amounts are found in the husk. The amylose and β-glucan contents in the milled rice fraction showed a strong negative correlation (r = −0.805; p < 0.0001). This new information about the β-glucan content of Thai rice cultivars could be used for the development of cereal-based functional food.

scholarly journals Determination of Sixteen Elements and Arsenic Species in Brown, Polished and Milled Rice

2014 ◽  
Vol 30 (2) ◽  
pp. 245-250 ◽  
Author(s):  
Tomohiro NARUKAWA ◽  
Eri MATSUMOTO ◽  
Tsutomu NISHIMURA ◽  
Akiharu HIOKI
Keyword(s):  
Arsenic Species ◽  
Milled Rice

scholarly journals Proficiency Testing for Determination of Cadmium and Major Inorganic Constituents in Milled Rice Flour

2008 ◽  
Vol 57 (6) ◽  
pp. 427-437 ◽  
Author(s):  
Kumiko Shindoh ◽  
Yoshiki Tsukakoshi ◽  
Shigehiro Naito ◽  
Kazumi Inagaki ◽  
Takashi Yarita ◽  
...  
Keyword(s):  
Proficiency Testing ◽  
Rice Flour ◽  
Milled Rice ◽  
Inorganic Constituents

Spectrophotometric Determination of Phosphine Residues in Rice

1985 ◽  
Vol 68 (2) ◽  
pp. 205-208 ◽  
Author(s):  
Jois R Rangaswamy ◽  
Mysore Muthu
Keyword(s):  
Spectrophotometric Determination ◽  
Closed System ◽  
The Other ◽  
Parboiled Rice ◽  
Polished Rice ◽  
Rice Samples ◽  
Phosphine Residues

Abstract Phosphine residues were determined in 2 types of rice samples, raw polished and parboiled. The yellow chromophore due to phosphine from raw polished rice had 2 absorption maxima, a strong one at 370- 380 nm and a weaker one at 400-410 nm. The chromophore from parboiled rice also had 2, one at 390-400 nm and the other at 410-420 nm. A closed system containing rice and a phosphine tablet or powder yielded 93-99% recovery of fortified phosphine. At any given dose of phosphine, parboiled rice retained a higher amount of residue after aeration than did raw polished rice.

scholarly journals Determination of Maximum Viscosity of Milled Rice Flours Using Near-Infrared Transmittance Spectroscopy.

2001 ◽  
Vol 7 (2) ◽  
pp. 104-109 ◽  
Author(s):  
Naoto Shimizu ◽  
Takashi Yanagisawa ◽  
Hiroshi Okadome ◽  
Hidechika Toyoshima ◽  
Henrik Andren ◽  
...  
Keyword(s):  
Near Infrared ◽  
Milled Rice ◽  
Infrared Transmittance ◽  
Rice Flours

Determination of cadmium in rice bran oils by ICP-MS with rapid ultrasound-assisted acid leaching extraction

2020 ◽  
Vol 15 (2) ◽  
pp. 193-198
Author(s):  
Zhiying Shao ◽  
Mei Xue ◽  
Qin Liu ◽  
Peng Li ◽  
Yong Fang ◽  
...  
Keyword(s):  
Rice Bran ◽  
Acid Leaching ◽  
Icp Ms ◽  
Ultrasound Assisted

Determination of aflatoxins in rice samples after magnetic solid phase extraction using MIL‐101(Cr)/magnetite nanocomposite

2020 ◽  
Vol 3 (8) ◽  
pp. 355-361
Author(s):  
Mohammad Bagher Sabeghi ◽  
Hamid Reza Ghasempour ◽  
Mohammad Kazem Koohi ◽  
Nasser Karimi
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Rice Samples ◽  
Magnetic Solid

Spectrophotometric Determination of Pyridoxine Hydrochlorine in Pharmaceutical Preparations and Foods

1997 ◽  
Vol 80 (6) ◽  
pp. 1368-1373 ◽  
Author(s):  
Kailasam Srtvidya ◽  
Natesan Balasubramanian
Keyword(s):  
Pharmaceutical Preparations ◽  
Molar Absorptivity ◽  
Spectrophotometric Assay ◽  
Stable Complex ◽  
Pyridoxine Hydrochloride ◽  
Beer's Law ◽  
Rice Samples ◽  
Beer’S Law ◽  
Aqueous Volume

Abstract An easy and sensitive spectrophotometric assay of pyridoxine is described. The procedure is based on formation of an azo dye by the reaction of pyridoxine with diazotized 2,4-dinitroaniline followed by the reaction of the dye with Hg2+ ions to form a stable complex with maximum absorbance at 545 nm. The system obeys Beer’s law for 4–75 μg pyridoxine hydrochloride in an overall aqueous volume of 25 mL (correlation coefficient, 0.9998). On extraction into 5 mL butan-1-ol, the system obeys Beer’s law in the range 0.8–15 μg pyridoxine hydrochloride at 545 nm. The color is stable for 60 min in both aqueous and organic phases (molar absorptivity, 3.7 × 104 L/mol · cm; coefficient of variation, 3.1%, n = 10). The pyridoxine contents of pharmaceutical preparations, a processed foodstuff, and 2 rice samples were determined by using the proposed method. Assay reliability was established by recovery studies and parallel determination using a reported method.

Quantification and Determination of Composition of Steryl Ferulates in Refined Rice Bran Oils Using an UPLC-MS Method

2017 ◽  
Vol 94 (3) ◽  
pp. 375-385 ◽  
Author(s):  
Maitê S. Cuevas ◽  
Patricia T. de Souza ◽  
Christianne E. da Costa Rodrigues ◽  
Antonio J. A. Meirelles
Keyword(s):  
Rice Bran ◽  
Steryl Ferulates
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