Simultaneous quantification of vitamin E, γ-oryzanols and xanthophylls from rice bran essences extracted by supercritical CO2

Sookwong, Phumon; Suttiarporn, Panawan; Boontakham, Pittayaporn; Seekhow, Pattawat; Wangtueai, Sutee; Mahatheeranont, Sugunya

doi:10.1016/j.foodchem.2016.05.001

Cited by 35 publications

(29 citation statements)

References 27 publications

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“…A study by Ramsay and co-workers 43 demonstrated that the addition of 5 wt ethanol to the SC-CO 2 solvent stream could improve oil yield from 17.98 to 18.23 , implying that more polar compounds, including antioxidants, are better extracted by increased polarity of the solvent than by carbon dioxide alone. A previous study by Sookwong et al 44 also evidenced that using 10 wt ethanol as the co-solvent could improve overall extraction of rice bran bioactive compounds including tocopherols, tocotrienols, γ-oryzanols, and xanthophylls. The study was aimed to optimize operational conditions for the highest antioxidants, and the optimized conditions were 60 min, 43 , and 37.4 MPa with 10 ethanol as a modifier 44 .…”

Section: Sc-co 2 Extraction Of Rbomentioning

confidence: 89%

“…A previous study by Sookwong et al 44 also evidenced that using 10 wt ethanol as the co-solvent could improve overall extraction of rice bran bioactive compounds including tocopherols, tocotrienols, γ-oryzanols, and xanthophylls. The study was aimed to optimize operational conditions for the highest antioxidants, and the optimized conditions were 60 min, 43 , and 37.4 MPa with 10 ethanol as a modifier 44 . However, there was a report indicating that excessive use of modifier, such as 10 to 30 , could negate the recovery of oil extract 45 .…”

Section: Sc-co 2 Extraction Of Rbomentioning

confidence: 89%

“…At lower pressure, the density of SC-CO 2 is considerably decreased, which causes lower diffusion of SC-CO 2 into RBO 36 . Considering as an alternative to the conventional solvent extraction method of RBO, RBO derived from SC-CO 2 extraction testing range of 40-80 and 15-25 MPa contained fatty acid profile consisting of oleic acid 39-51 , linoleic acid 28-38 , and palmitic acid [20][21][22] , which was comparable to RBO derived from compressed liquefied petroleum gas extraction having oleic acid [35][36][37][38][39][40][41][42][43][44][45][46][47][48] , linoleic acid 30-44 , and palmitic acid 19-22 37 . The study by Kuk and Dowd 32 used SC-CO 2 at 62 MPa and 100 to obtain a maximal oil yield of 20.4 .…”

Section: Sc-co 2 Extraction Of Rbomentioning

confidence: 99%

“…It has been used for supercritical extraction of RBO with high γ-oryzanol content 14,41 . Operation parameters were optimized for the highest oil recovery 47 , for oil with highest antioxidants 44 , and for the best operation processes of RBO deacidfication 39 .…”

Section: Sc-co 2 Extraction Of Rbomentioning

confidence: 99%

“…Different varieties of rice bran also affect the quality of RBO. Sookwong et al 44 extracted RBOs from various rice bran samples, including pigmented and non-pigmented glutinous and nonglutinous varieties, using SC-CO 2 , and found that the 52 that RBO extracted with SC-CO 2 had an oil yield comparable to that extracted with hexane 22.5 . The SC-CO 2 oil contained little amount of phosphatides, wax and pro-oxidant metals Fe and Cu , and the color quality of the oil was far superior to that of hexane-extracted oil.…”

Section: Sc-co 2 Extraction Of Rbomentioning

confidence: 99%

See 4 more Smart Citations

Supercritical CO<sub>2</sub> Extraction of Rice Bran Oil –the Technology, Manufacture, and Applications

Sookwong

Mahatheeranont

2017

J. Oleo Sci.

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Section: Sc-co 2 Extraction Of Rbomentioning

confidence: 89%

Section: Sc-co 2 Extraction Of Rbomentioning

confidence: 89%

Section: Sc-co 2 Extraction Of Rbomentioning

confidence: 99%

Section: Sc-co 2 Extraction Of Rbomentioning

confidence: 99%

Section: Sc-co 2 Extraction Of Rbomentioning

confidence: 99%

See 3 more Smart Citations

Supercritical CO<sub>2</sub> Extraction of Rice Bran Oil –the Technology, Manufacture, and Applications

Sookwong

Mahatheeranont

2017

J. Oleo Sci.

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Optimization of ultrasound‐assisted extraction by response surface methodology, antioxidant capacity, and tyrosinase inhibitory activity of anthocyanins from red rice bran

Wang

Zhao

Zhang

et al. 2020

Food Science & Nutrition

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The anthocyanins contents from red rice bran were characterized by HPLC/MS. Response surface methodology was used to optimize the ultrasound‐assisted extraction of red rice bran anthocyanin. The antioxidant activities were evaluated in terms of IC50. The tyrosinase inhibitory activities of the anthocyanin samples from red rice bran and the standard substances were determined by a spectrophotometric method. According to mass spectrometry information, the main component of anthocyanins is paeoniflorin (m/z = 480). The optimized anthocyanin level was 5.80 mg/g under the following conditions: solid–liquid ratio of 1:17.46; ethanol concentration of 78.37%; ultrasonication time of 55.23 min; and pH of 2.31. The IC50 value of the DPPH radical scavenging and the superoxide anion scavenging activities of the sample were 53.51 and 2,375 μg/ml; those of the standard were 14.60 and 64.74 μg/ml; and those of vitamin C were 24.45 and 136.25 μg/ml, respectively. The IC50 values of the tyrosinase inhibition activities of the sample and Vc were 4.26 and 2.18 μg/ml, respectively. There is a significant difference (p < .05) between the activities of the three, which may be caused by the purity of the extract. Red rice bran anthocyanins have valuable research and development prospects as skin whiteners and healthcare products.

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Natural variation and underlying genetic loci of γ‐oryzanol in Asian cultivated rice seeds

et al. 2022

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γ-oryzanol is the most studied component in rice (Oryza sativa L.) bran oil. It is not only associated with physiological processes of rice growth and development but also grain quality that is related to human health. Previous studies focused mainly on γ-oryzanol composition and content in various rice cultivars, while its biosynthetic and regulatory pathways remain unknown. Here we present the quantitative identification of γ-oryzanol in rice seeds across 179 Asian cultivated accessions using ultra-performance liquid chromatography-time-of-flight mass spectrometry (UPLC-TOF/MS), which revealed a significant natural variation in γ-oryzanol content among these tested rice accessions. In addition, we present, for the first time, the genomewide association study (GWAS) on rice seed γ-oryzanol, which identified 187 GWAS signal hot spots and 13 candidate genes that are associated with variable γ-oryzanol content and provided the top 10 rice haplotypes with high γ-oryzanol content for breeding. Collectively, our study provides valuable germplasms for breeding rice cultivars rich in γ-oryzanol and genetic resources for elucidating genetic and biochemical bases of variable γ-oryzanol in rice. INTRODUCTIONRice (Oryza sativa L.) is the prominent grain consumed by about 3.5 billion people worldwide. The rice bran oil derived

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Simultaneous quantification of vitamin E, γ-oryzanols and xanthophylls from rice bran essences extracted by supercritical CO2

Cited by 35 publications

References 27 publications

Supercritical CO<sub>2</sub> Extraction of Rice Bran Oil –the Technology, Manufacture, and Applications

Supercritical CO<sub>2</sub> Extraction of Rice Bran Oil –the Technology, Manufacture, and Applications

Optimization of ultrasound‐assisted extraction by response surface methodology, antioxidant capacity, and tyrosinase inhibitory activity of anthocyanins from red rice bran

Natural variation and underlying genetic loci of γ‐oryzanol in Asian cultivated rice seeds

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