Anthocyanin content and antioxidant capacity in bran extracts of some <scp>T</scp>hai black rice varieties

Pitija, Kitsada; Nakornriab, Muntana; Sriseadka, Tinakorn; Vanavichit, Apichart; Wongpornchai, Sugunya

doi:10.1111/j.1365-2621.2012.03187.x

Cited by 59 publications

(43 citation statements)

References 30 publications

(37 reference statements)

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“…The results suggested that anthocyanins had higher contribution to antioxidant properties than did phenolic compounds due to relatively high concentrations of anthocyanins compared with the overall phenolic compounds. In contrast to this study, phenolic components had higher contribution to antioxidant activity than did anthocyanin pigments (Pitija et al 2013). The contrasting results of different studies would be possibly due to materials used, evaluation methods for antioxidation, and complicated extracts containing two or more antioxidants (del Pozo-Insfran et al 2006).…”

Section: Discussioncontrasting

confidence: 99%

Genotypic variability in anthocyanins, total phenolics, and antioxidant activity among diverse waxy corn germplasm

et al. 2014

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Identification of germplasm sources of waxy corn (Zea mays L. var. ceratina) with high variability for anthocyanins, phenolic compounds, and antioxidant activity is an important phase for waxy corn breeding for improvement of useful phytochemicals. The objectives of this study were to evaluate 49 genotypes of waxy corn for color parameters, monomeric anthocyanin content (MAC) and total phenolic content (TPC), and antioxidant activities. The experiment was conducted under field conditions in a randomized complete block design with three replications for two seasons in the rainy and the dry season 2010. Corn genotypes and seasons were significantly different (P B 0.01) for most traits under study except for TPC. Variations due to genotype were large for all characters, accounting for 74.43-95.70 % of total variations. The interactions between genotype and season were significant for all characters. Forty-nine corn genotypes were divided into four groups based on antioxidants and their activities. Significant and positive correlations were found among the anthocyanins, phenolics, and antioxidant activities, and correlation coefficients between anthocyanins with 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging ability and Trolox equivalent antioxidant capacity (TEAC) assays were high (r = 0.94 and 0.88, respectively). All of the Hunterlab color parameters, including chroma and hue angle were highly correlated with anthocyanins, phenolics and their activities and therefore could be used as indirect selection criteria for improving levels of antioxidants and antioxidant activity in waxy corn.

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Section: Discussioncontrasting

confidence: 99%

Genotypic variability in anthocyanins, total phenolics, and antioxidant activity among diverse waxy corn germplasm

et al. 2014

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“…Furthermore, anthocyanin involving free radical scavenging and antioxidant is also the main phytochemical in black rice (Pitija et al, 2013). Thus, black rice would be more advantageous for medicinal property and it is also a rice genetic resource for improving rice as a functional food crop.…”

Section: Performance and Stability Of Rice Genotypesmentioning

confidence: 99%

“…In addition, black glutinous rice is a crop thought to have herbal properties and it has been used traditionally in various kinds of medical treatments. The purple pigment (anthocyanin: cyaniding-3-glucoside) in the husk (hull) and pericarp and gamma oryzanol from rice bran oil are advantageous antioxidants (Xu et al, 2001;Juliano et al, 2005;Vorarat et al, 2010;Pitija et al, 2013). Black rice contained two to three times the amount of anthocyanin and gamma oryzanol higher than did white rice (Ryu et al, 1998;Boonsit et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Black Glutinous Rice Genotypes for Stability of Gamma Oryzanol and Yield in Tropical Environments

Banterng¹,

Joralee²

2014

Turkish Journal of Field Crops

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Gamma oryzanol is an important phytochemical of black glutinous rice as it has positive effects on human health. The objective of this study was to evaluate stability of gamma oryzanol content and grain yield for black glutinous rice genotypes grown under different environments. Twenty-five black glutinous rice genotypes and 2 white glutinous rice genotypes were evaluated during 2011 and 2012 in 8 farmers' fields of Thailand. The experimental trials were laid out in a randomized complete blocks design (RCBD) with 3 replications. Soil data before growing, weather data during growing season, yield components, grain yield and gamma oryzanol content were recorded. The results indicated that location (L), genotype (G) and G×L interaction were highly significant for number of panicles per hill, number of filled grains per panicle, 1000-grain weight, grain yield, gamma oryzanol per grain weight and gamma oryzanol yield. The GGE biplot analysis indicated that KKU-GL-BL-06-023 (V17), Khaokam Gs.no. 88084 (V5) and KKU-GL-BL-11-001 (V25) had both high mean performance and stability for grain yield. The superior genotypes for gamma oryzanol per grain weight were KKU-GL-BL-11-001 (V25) and KKU-GL-BL-06-043 (V23). The desirable genotypes for gamma oryzanol yield were KKU-GL-BL-11-001 (V25), Niewdam Gs.no. 21427 (V3) and KKU-GL-BL-06-043 (V23).

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“…These compounds include anthocyanidins (cyanidin-3-O-glucoside and peonidin-3-O-glucoside [1]), flavonoids glycosides (quercetin-3-O-glucoside, isorhamnetin-3-O-glucoside and myricetin-7-O-glucoside [2]), simple phenolics (2-methoxy-4-vinylphenol (4-vinylguaiacol), 2-methoxy-phenol (guaiacol), and 1,2-benzendiol (catechol) [3]), vitamin E, (tocopherols and tocotrienols [4]), and -oryzanols (ferulate derivatives of 24-methylenecycloartenol, cycloartenol, campesterol and β-sitosterol [5]). …”

Section: Introductionmentioning

confidence: 99%

Fractionation and Identification of Antioxidant Compounds from Bran of Thai Black Rice cv. Riceberry

Suttiarporn¹,

Sookwong²,

Mahatheeranont³

2016

IJCEA

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Abstract-Bran of Thai Black Rice cv. Riceberry was extracted using solvent extraction (hexane, dichloromethane and methanol). The crude extracts obtained were investigated for their antioxidant property and total phenolic contents which were assessed by 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging assay and Folin-Ciocalteu's method, respectively. Results showed that the methanolic extract had the strongest total antioxidant activity and phenolic content at 97.83 % and 9.87 mg GAE/ml of extract, respectively. The methanolic extract was further fractionated by column chromatography to obtain ten fractions. The chemical components of the crude extracts and the fractions were analyzed by gas chromatography-mass spectrometry (GC-MS). Seventy-nine constituents were identified in all extracts of Riceberry bran. Among them, 9 simple phenolics and 4 flavonoids, which were previously reported to have antioxidant activities, were quantified. The major simple phenolic was 4-vinylguaiacol and the major flavonoid was apigenin.

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Anthocyanin content and antioxidant capacity in bran extracts of some Thai black rice varieties

Cited by 59 publications

References 30 publications

Genotypic variability in anthocyanins, total phenolics, and antioxidant activity among diverse waxy corn germplasm

Genotypic variability in anthocyanins, total phenolics, and antioxidant activity among diverse waxy corn germplasm

Evaluation of Black Glutinous Rice Genotypes for Stability of Gamma Oryzanol and Yield in Tropical Environments

Fractionation and Identification of Antioxidant Compounds from Bran of Thai Black Rice cv. Riceberry

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