Effect of hydrothermal treatment on the antioxidant activity of Sambaekcho (Saururus chinensis) leaves

Song, Ae-Sun; Lim, Sangwook; Kim, Su-Jung; Lee, Seung‐Cheol

doi:10.1007/s10068-013-0151-4

Cited by 8 publications

(2 citation statements)

References 23 publications

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“…All color values increased with increasing extraction time from 10 to 30 min, and they remained constant from 30 to 50 min. Song et al ( 29 ) reported that the L * values of hydrothermal extracts of Saururus chinensis leaves decreased, and the a * values increased with increasing temperature and time due to the Maillard reaction.…”

Section: Resultsmentioning

confidence: 99%

Enhancement of Phenolic Production and Antioxidant Activity from Buckwheat Leaves by Subcritical Water Extraction

Kim¹,

Kim²,

Lim³

2017

pnf

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To enhance the production of phenolic compounds with high antioxidant activity and reduce the level of phototoxic fagopyrin, buckwheat leaves were extracted with subcritical water (SW) at 100~220°C for 10~50 min. The major phenolic compounds were quercetin, gallic acid, and protocatechuic acid. The cumulative amount of individual phenolic compounds increased with increasing extraction temperature from 100°C to 180°C and did not change significantly at 200°C and 220°C. The highest yield of individual phenolic compounds was 1,632.2 μg/g dry sample at 180°C, which was 4.7-fold higher than that (348.4 μg/g dry sample) at 100°C. Total phenolic content and total flavonoid content increased with increasing extraction temperature and decreased with increasing extraction time, and peaked at 41.1 mg gallic acid equivalents/g and 26.9 mg quercetin equivalents/g at 180°C/10 min, respectively. 2,2-Diphenyl-1-picrylhydrazyl free radical scavenging activity and ferric reducing ability of plasma reached 46.4 mg ascorbic acid equivalents/g and 72.3 mmol Fe2+/100 g at 180°C/10 min, respectively. The fagopyrin contents were reduced by 92.5~95.7%. Color values L* and b* decreased, and a* increased with increasing extraction temperature. SW extraction enhanced the yield of phenolic compounds with high antioxidant activity and reduced the fagopyrin content from buckwheat leaves.

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Section: Resultsmentioning

confidence: 99%

Enhancement of Phenolic Production and Antioxidant Activity from Buckwheat Leaves by Subcritical Water Extraction

Kim¹,

Kim²,

Lim³

2017

pnf

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“…80 It is worthwhile to note that losses in phytochemical contents following hydrothermal processing of herbs may compromise their radical scavenging potential and the capacities of such products to exert health benefits. 66,81 Nevertheless, hydrothermal processing serves as one of several measures for the elimination of inherent cytotoxic phytochemicals from raw medicinal herbs and vegetables. 82,83,84,85 Measurements of hepatic enzymes in serum of animal models have been used in previous studies as basis for ascertaining the capacities of herbal remedies to ameliorate chemically induced liver damage.…”

Section: Discussionmentioning

confidence: 99%

Functional Assessments and Histopathology of Hepatorenal Tissues of Wistar Rats Infused with Carbon Tetrachloride and Treated with Raw and Hydrothermal Processed Herbs

Ojiako¹,

Chikezie²,

Ukairo³

et al. 2017

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Background and Aim: Herbal remedies offer another strategy for alleviation of co-existing liver and kidney pathologic conditions. Objective: The present study ascertained the functional integrity of hepatic and renal tissues, concurrently with blood lipid patterns, of Wistar rats infused with CCl 4 and treated with raw and hydrothermal processed herbs, namely, Monodora myristica, Chromolaena odorata, Buccholzia coriacea and Sphenostylis stenocarpa. Materials and Methods: Measurement of phytochemical contents of the herbs was according to standard methods. The rats were randomly designated on the basis of diets and treatments received for 28 consecutive days. Fibrosis was induced in the Wistar rats by single dose intra-peritoneal injection of CCl 4 for 2 consecutive days. Liver and kidney function tests and serum lipid profile were measured using spectrophotometric methods. Renal and hepatic tissues were subjected to histopathological examinations. Results: The concentrations of alkaloids in the four herbal extracts were within the range of 4.83 ± 0.03 -31.33 ± 0.29 mg/100 g sample, whereas the concentrations of saponins varied within a relatively narrow range: 0.33 ± 0.09 -4.33 ± 0.02 mg/100 g dry sample; p > 0.05. The activity ratios of AST to ALT of the rat groups were generally less than 1.0 unit. Atherogenic indices of fibrotic rats were within the following ranges: TAG/HDL-C ratio (3.59 ± 0.03 -6.76 ± 0.06), TC/HDL-C ratio (3.72 ± 0.02 -6.94 ± 0.05) and LDL-C/HDL-C ratio (2.00 ± 0.01 -4.59 ± 0.02). Conclusion: Losses in phytochemical contents following hydrothermal processing of the herbs did not substantially affect their overall therapeutic scores against morphological and functional impairments of hepatic and renal tissues following CCl 4 intoxication of the rats.

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Subcritical Water Mediated Hydrolysis of Rice Husk Lignocellulose and Upcycling Applications of the Hydrolysates

Lee,

Nam,

Lim

et al. 2024

Food Bioprocess Technol

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Effect of hydrothermal treatment on the antioxidant activity of Sambaekcho (Saururus chinensis) leaves

Cited by 8 publications

References 23 publications

Enhancement of Phenolic Production and Antioxidant Activity from Buckwheat Leaves by Subcritical Water Extraction

Enhancement of Phenolic Production and Antioxidant Activity from Buckwheat Leaves by Subcritical Water Extraction

Functional Assessments and Histopathology of Hepatorenal Tissues of Wistar Rats Infused with Carbon Tetrachloride and Treated with Raw and Hydrothermal Processed Herbs

Subcritical Water Mediated Hydrolysis of Rice Husk Lignocellulose and Upcycling Applications of the Hydrolysates

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