The antioxidant and free-radical scavenging activities of extract and fractions from corn silk (Zea mays L.) and related flavone glycosides

Li, Jun; Wang, Cuina; Wang, Zuozhao; Cheng, Zhenshun; Lu, Shuang; Liu, Jingbo

doi:10.1016/j.foodchem.2010.11.014

Cited by 224 publications

(166 citation statements)

References 34 publications

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“…Reducing power is considered a strong indicator of the antioxidant activity, as it measures the ability of the antioxidant molecules to reduce the Fe 3+ /ferricyanide complex to the ferrous form through electron transfer [24,26]. In this study, the high reducing power of the ethyl acetate extract of rice straw increased with increasing the concentration of the extract (Fig.…”

Section: Antioxidant Activitymentioning

confidence: 72%

Phenolic Compounds and Antioxidant Activity of Rice Straw Extract

Elzaawely

Maswada

El-Sayed

et al. 2017

ILNS

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Abstract. Agricultural wastes cause a serious environmental problem in Egypt. Utilization of these wastes by an environmentally friendly way is a very important issue. The objective of this study was to utilize rice straw into high-value products. Antioxidant activity, total soluble phenols, and flavonoids were evaluated in ethyl acetate extract prepared from rice straw after alkaline hydrolysis. Total phenols were found to be 221.6 mg gallic acid equivalents (GAE), while total flavonoids were 4.9 mg rutin equivalents (RE). The extract exhibited strong antioxidant activity measured by the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging method and its IC 50 value was 0.4 mg/ml. Furthermore, the ethyl acetate extract possessed high antioxidant activity assayed by β-carotene bleaching method and its value of lipid peroxidation inhibition (LPI) was 75.4%. It also exhibited high reducing power and its IC 50 value was equal to 0.06 mg/ml. HPLC analysis indicated that this extract contained seven phenolic acids including; protocatechuic, caffeic, syringic, p-coumaric, ferulic, rosmarinic and cinnamic, in addition to two flavonoids; qurecetin and kaempferol. Results indicated that ferulic and p-coumaric acids were the major soluble phenolic acids in rice straw, and their concentrations were 3.9 and 2.9 mg/g DW. It can be summarized that the strong antioxidant activity of ethyl acetate extract, prepared from rice straw, was highly correlated with its high level of phenolic compounds.

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Section: Antioxidant Activitymentioning

confidence: 72%

Phenolic Compounds and Antioxidant Activity of Rice Straw Extract

Elzaawely

Maswada

El-Sayed

et al. 2017

ILNS

View full text Add to dashboard Cite

show abstract

“…Secondly, they were dried in a shaded well-ventilated place. Thirdly, pulverizing them using a knife mills then keeping them stored in glass containers at room temperature for further processing (21). A 100 g of pulverized corn silk were exposed to a hot continuous extraction by Erlenmeyer flask in a Ultrasonic with 1L of (99% ethanol, 80% v/v ethanol/water and water) (3*5 L) at steady temperature of (50 ± 1.0 °C) for three cycles of 5 hours periods for each.…”

Section: Extraction From Corn Silkmentioning

confidence: 99%

Detection of Rutin, Kaepferol, and Quercetin based Crude from Corn Silk and Studying their Effects on the Inhibition of Pure Urease Enzyme and Urease of Klebsiella Species

Ismael¹,

Ahmed²,

Mahmoud³

2017

Int.J.Curr.Microbiol.App.Sci

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“…This procedure was described by Liu et al (2011). Percentage of radical scavenging activity was plotted against the corresponding concentration of the extract (μg/mL) to obtain IC50 value in mg/mL.…”

Section: Determination Of Antioxidant Activitymentioning

confidence: 99%

Hepatoprotective Effect of Tofu Processed From Germinated Soybean on Carbon Tetrachloride Induced Chronic Liver Injury in Mice

Liên

Hoang²,

Hanh³

et al. 2016

J Food Health Sci

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Abstract:The hepatoprotective activities of silk tofu made from germinated and non germinated soybeans at different doses of feeding against CCl 4 induced hepatic cell toxicity in mice was investigated in this study. The heptatoprotective activity was analyzed by assessing the ratio of liver weight to body weight (L/B), the levels of serum alanine aminotransferase (ALT), total cholesterols (TC), the hepatic malondehydyde (MDA), protein carbonyl (PC) and vitamin C levels as well as the histopathological analysis of liver tissue. All types of silk tofu significantly reduced the L/B value; ALT activity, total cholesterol, hepatic MDA and PC levels, beside, liver vitamin C content increased compared to CCl 4 intoxicated mice. Silk tofu made from germinated soybeans expressed higher hepatoprotective activity as compared to silk tofu made from non germinated soybeans. Mice fed with silk tofu made from germinated soybeans at the dose of 0.4 g/g body weight/day displayed all biochemical parameters as well as the liver tissue histopathological analysis that were similar to that of normal mice and silymarin treated mice. It was suggested that tofu specially made from germinated soybeans expressed great hepatoprotective effect.

show abstract

The antioxidant and free-radical scavenging activities of extract and fractions from corn silk (Zea mays L.) and related flavone glycosides

Cited by 224 publications

References 34 publications

Phenolic Compounds and Antioxidant Activity of Rice Straw Extract

Phenolic Compounds and Antioxidant Activity of Rice Straw Extract

Detection of Rutin, Kaepferol, and Quercetin based Crude from Corn Silk and Studying their Effects on the Inhibition of Pure Urease Enzyme and Urease of Klebsiella Species

Hepatoprotective Effect of Tofu Processed From Germinated Soybean on Carbon Tetrachloride Induced Chronic Liver Injury in Mice

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