• Title/Summary/Keyword: total phenol content

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Impacts of Various Solvent Extracts from Wild Haw(Crataegus pinnatifida Bunge) Pulpy on the Antioxidative Activities (야생산사(Crataegus pinnatifida Bunge)과육 용매별 추출물의 항산화 효과)

  • Duan, Yishan;Kim, Min-A;Seong, Jong-Hwan;Lee, Young-Guen;Kim, Dong-Seob;Chung, Hun-Sik;Kim, Han-Soo
    • Journal of the East Asian Society of Dietary Life
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    • v.24 no.3
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    • pp.392-399
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    • 2014
  • Haw(Crataegus pinnatifida Bunge) belongs to the rose family and has beneficial health effects such as anti-obesity and gastroprotective activities. This study compared the antioxidative activities of various solvent extracts from haw. After removing seeds, pulpy was extracted with 70% methanol, 70% ethanol, chloroform :methanol(CM, 2:1, v/v), n-butanol, and ethyl acetate(EA). Total phenol contents were 71.46, 70.41, 47.63, 47.49 and 45.95 mg/g in the 70% methanol, 70% ethanol, CM, n-butanol and EA extracts, respectively. Total flavonoid contents of CM and n-butanol extracts were higher compared to other extracts at 1.63 mg/g and 1.59 mg/g, respectively, whereas EA extract had the lowest flavonoid content at 1.12 mg/g. Corresponding to total phenol contents, among $NO_2$ radical scavenging activity, antioxidant activity by ${\beta}$-carotene bleaching assay, and superoxide dismutase(SOD)-like ability, 70% methanol and 70% ethanol extracts showed higher antioxidative activities than the other extracts. However, the lowest activities were n-butanol extract in $NO_2$ radical scavenging activity as well as EA extract in antioxidant activity by ${\beta}$-carotene bleaching assay and SOD-like ability. These results suggest that haw extracts are available as a new natural antioxidant, and its activities are attributed to antioxidant substances such as phenolic compounds and flavonoids.

Phenolic Compounds in Common and Tartary Buckwheat (단메밀과 타타리메밀의 페놀화합물 함량 비교)

  • Park Byoung-Jae;Kwon Soon Mi;Park Jong In;Chang Kwang Jin;Park Cheol Ho
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.50 no.spc1
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    • pp.175-180
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    • 2005
  • This study was carried out to determine total contents of phenol and flavonoid in common and tartary buckwheat for the purpose of developing new kind of functional food with buckwheat materials. Total content of phenol and flavonoid in seeds of tartary buckwheat were higher than that of common buckwheat. It showed same tendency in groats and hulls. Total content of phenol and flavonoid in groats showed higher than hulls in tartary buckwheat while those of hulls was a little higher than groats in common buckwheat seed. Rutin content in common buckwheat was higher in odor of the hulls (25.2 mg/100 g)>dehulled seed(19.8 mg/100 g)>groats (12.8mg/100 g). But tartary buckwheat was higher in oder of the groats(2042.1 mg/100 g)>dehulled seed (1375.8 mg/100 g)>hulls(138.7 mg/100 g). Flavanol content in dehulled seeds of the tartary and common buckwheat did not show the difference. However, flavanol contents in leaf, stem and spouts of tartary buckwheat were respectively higher than in those of common. Among the flavanols, catechin content was highest in all plant parts of their buckwheat and also was higher in odor of epicatechin>epicatechingallate. However, epicatechingallate content in sprouts of both buckwheat species was about 30-40 times higher than seeds.

Characteristics of Tyrosinase Inhibitory Extract from Ecklonia stolonifera

  • Park Douck-Choun;Ji Cheong-Il;Kim Sang-Ho;Jung Kyoo-Jin;Lee Tae-Gee;Kim In-Soo;Park Yeung-Ho;Kim Seon-Bong
    • Fisheries and Aquatic Sciences
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    • v.3 no.3_4
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    • pp.195-199
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    • 2000
  • Tyrosinase inhibitory activities of 14 kinds of seaweed, Ecklonia stolonifera, Ecklonia cava, Undaria pinnatiflda, Laminaria japonica, Sargassum fulvellum, Sargassum miyabei, Sargassum thunbergii, Porphyra yezoensis, Gracilaria verrucosa, Carpopeltis affinis, Pachymeniopsis elliptica, Gelidium amansii, Codium fragile and Ulva pertusa were determined using commercially available mushroom tyrosinase in an in vitro assay system. The $1\%$ (w/v) methanol extract from E. stolonifera showed the highest tyrosinase inhibitory activity of $79.0\%$, electron donating activity of $79.0\%$ and total phenol content of 3.75 mg/100g. Ethyl acetate-methanol-water (7 : 2 : 0.2, v/v) fraction $(0.5\%,\;w/v)$ isolated from the methanol extract showed tyrosinase inhibitory activity of $75.9 \%$, electron donating activity of $88.1 \%$ and total phenol content of 4.38 mg/100g. Tyrosinase inhibitory activity was closely associated with total phenol content (R = 0.99) and electron donating activity (R=0.99). Maximum absorption wavelength of the fraction was 218nm and that of phenolic compounds showed about a range from 210 to 220nm. The inhibition mode of the fraction was noncompetitive inhibition.

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Phenolic Acid Contents and ROS Scavenging Activity of Dandelion(Taraxacum officinale) (민들레(Taraxacum officinale) 잎과 뿌리의 페놀산 조성 및 활성산소 소거활성)

  • Kim, Young-Chan;Rho, Jeong-Hae;Kim, Kyung-Tack;Cho, Chang-Won;Rhee, Young-Kyung;Choi, Ung-Kyu
    • Food Science and Preservation
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    • v.15 no.3
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    • pp.325-331
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    • 2008
  • The propose of this study was to investigate the antioxidant activity of 80% ethanol extracts and various solvent fractions of dandelion (Taraxacmn officinale) leaves and roots, Total phenolics and phenolic acid contents were also examined. The total phenol content of leaves and roots were $7.9{\pm}0.4%$ and $9.4{\pm}0.3%$ respectively. Eight phenolic acids were separated by GC, among which caffeic acid (113.7 mg%)and m-coumaric acid (152.6 mg) were the dominant phenolic acids in leaves and roots, respectively. Amongst solvent functions of leaves and roots, the ethyl acetate fraction showed the strongest radical scavenging activity. A strong correlation was found between total phenol content and electron-donating ability, and ABTS radical scavenging activity showed a similar trend as electron-donating ability. Hydroxyl-radical-scavenging activity and lipid peroxidation were significantly higher in the ethyl acetate fraction than other factions. In particular, the SOD-like activity was highest (43.6%) in the ethyl acetate fraction of dandelion leaves, and was higher than that of trolox. Thus, the ethyl acetate fraction of dandelion leaves exhibited significant phenol content, antioxidant activity, and free-radical-scavenging effects.

Homobrassinolide and chemical composition of curcuma longa L. (turmeric) rhizome

  • G, Rajesh;B.V. Vardhini
    • Advances in environmental research
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    • v.12 no.1
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    • pp.65-75
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    • 2023
  • The effect of homobrassinolide (HBL) on the nutrient value of Curcuma longa L. (turmeric) rhizome grown in Nizamabad, Telangana State, India was studied. Application of homobrassinolide (HBL) as foliar spray to turmeric plants on the 20th, 40th and 60th day from sowing resulted in enhanced chemical composition of turmeric rhizome. Application of homobrassinolide (HBL) resulted in enhanced total sugars, principal ingredient curcumin, total poly phenol content, total flavonoid content, total tannin content, crude fat, crude fibre and essential oils (turmerone, zingiberene, cineole and p-cymene) present in the turmeric rhizome indicating the ability of homobrassinolide (HBL) as a potential plant growth regulator (PGR).

Molecular characterization and biological changes caused by Agrobacterium-mediated infiltration of PgTRX1

  • Choi, Seung Hyuk;Seo, Ji Won;Lee, Jae Geun;Yu, Chang Yeon;Seong, Eun Soo
    • Journal of Applied Biological Chemistry
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    • v.64 no.3
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    • pp.205-211
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    • 2021
  • In order to test the functionality of Panax ginseng thioredoxin 1 (PgTRX1) isolated from fermented wild ginseng roots, a transient effect on physiological activity were performed over a short time frame using the Agrobacterium infiltration technique. The PgTRX1 gene isolated from fermented wild ginseng was confirmed to have a size of 579 bp, and the expression of PgTRX1 was the highest in the sample after 6 h of fermentation. As a result of constructing this gene and confirming the infiltration reaction mediated by Agrobacterium in tobacco leaves, it was found that the expression of the NbHSR203j gene was also induced as PgTRX1 expression increased. As a result of measuring the biological activity of the infiltration samples, the total phenol content increased by 35.45±1.84 to 49.01±1.84 ㎍ GAE/mL compared to the control, and the total flavonoid amount of 9.52±0.41 to 9.82±0.25 ㎍ QE/mL was slightly high. From these results, Agrobacterium-mediated PgTRX1 appears to be related to the hypersensitive response induction mechanism of plants and the production of secondary metabolites such as phenolic substances.

Hydrophilic Extracts of the Bark from Six Pinus Species

  • Masendra, Masendra;Ashitani, Tatsuya;Takahashi, Koetsu;Susanto, Mudji;Lukmandaru, Ganis
    • Journal of the Korean Wood Science and Technology
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    • v.47 no.1
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    • pp.80-89
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    • 2019
  • Pine barks are important biomass resources because they are utilised in the production of pine wood and rosins. However, no chemical study has been conducted on the hydrophilic status of pine barks in Indonesia. This aim of this study is to explore the hydrophilic extracts of the barks from six Pinus species (P. elliotii, P. caribeae, P. oocarpa, P. merkusii P. montezumae, and P. insularis). The hydrophilics of pine barks were analysed using gas chromatography-mass spectrometry. The presence of polyphenol contents in the ethanol extracts obtained from the barks of six Pinus species was determined using the tannin-formaldehyde method, Folin-Cioucalteu assay, and vanillin-HCl assay. The ethanol and hot water soluble extractives derived from inner barks were higher in quantity when compared to those derived from the outer bark samples. The polyphenol measurement showed that the highest value of total phenol content was derived from the outer bark of P. montezumae whereas those of the total phenol and tannin- formaldehyde contents were derived from the inner and outer barks of P. oocarpa. GC-MS analysis revealed that nitrogenous compounds are dominant constituents in the inner and outer barks of the six species, followed by sugars and monophenolics, respectively.

Analysis of Food Components of Carthamus Tinctorius L. Seed and its Antimicrobial Activity (홍화씨의 식품학적 성분 분석 및 항균활성)

  • Yu, Seok-Yeong;Lee, Young-Jun;Kang, Suk-Nam;Lee, Seong-Kap;Jang, Jung-Young;Lee, Hyo-Ku;Lim, Jeong-Ho;Lee, Ok-Hwan
    • Food Science and Preservation
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    • v.20 no.2
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    • pp.227-233
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    • 2013
  • This study was conducted to investigate the physicochemical characteristic of Carthamus tinctorius L. seed and to assess its total phenol content, total flavonoids content and antimicrobial activity. The moisture, crude protein, crude fat, crude ash and carbohydrates of the Carthamus tinctorius L. seed were 5.58, 37.16, 13.69, 3.52, and 40.05%, respectively. Total amino acid in Carthamus tinctorius L. seed was 391.99 mg%. The major free sugar of Carthamus tinctorius L. seed were fructose(3.29%) and sucrose(1.74%). Linoleic acid(79.46%) was a major fatty acids in the crude fat of Carthamus tinctorius L. seed. The K and Ca contents were the highest in Carthamus tinctorius L. seed. Total phenol and total flavonoids contents of the ethanolic extract were $55.52{\pm}0.99$ mg GAE/g and $78.69{\pm}0.91$ mg QE/g, respectively. The extract from Carthamus tinctorius L. seed showed growth inhibitory effect on Staphylococcus aureus, Salmonella typhimurium, Escheria coli, Candida albicans, Bacillus cereus, Listeria monocytogenes, Vibrio parahaemolyticus, and Clustridium perfringens. These results indicate that the Carthamus tinctorius L. seed extract can inhibit food pathogen associated with total phenol and total flavonoids contents.

Monitoring of Wine Quality by using Environmentally friendly Tomato Concentrate and Commercial Wines (친환경 토마토 농축액을 이용한 토마토 와인과 시중 판매 와인 품질 모니터링)

  • Lee, Seul;Moon, Hey-Kyung;Lee, Su-Won;Moon, Jae-Nam;Kim, Dong-Hwan;Kim, Gwi-Young
    • Journal of the Korean Society of Food Culture
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    • v.29 no.3
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    • pp.278-285
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    • 2014
  • This study investigated the quality characteristics of fermented wines using a selected strain to obtain basic data on sugar-free tomato wine production. Alcohol content of the tomato and commercial wine was 8.2~12.9%, whereas tomato wine showed a relatively low alcohol content of 8.2%. For total phenol content, Chile wine showed the highest value of 162.89 mg/100 g, followed by persimmon wine at 122.33 mg/100 g. Tomato wine showed a relatively high total phenol content of 96.57 mg/100 g. In all sections, xylose was not detected, although there were differences in free sugars depending on each product. Acetic and citric acid contents were highest in tomato wine, and the six kinds of commercial wine and tomato wine showed acetic acid content of 800.6 mg/100 g and citric acid content of 1,064.4 mg/100 g. The total free amino acid content was 100.63 mg/100 g in tomato wine, which was 2~3 times higher compared to that in commercial wine ($26.33{\pm}52.15mg/100g$).

Evaluation of Individual Glucosinolates, Phytochemical Contents, and Antioxidant Activities under Various Red to Far-Red Light Ratios in Three Brassica Sprouts (적색/원적색광 조사 비율에 따른 3종 배추과 채소 새싹의 Glucosinolate 함량 및 항산화 기능성 평가)

  • Jo, Jung Su;Lee, Jun Gu
    • Journal of Bio-Environment Control
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    • v.27 no.4
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    • pp.415-423
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    • 2018
  • The aim of this study was to evaluate the individual glucosinolate (GSL), total phenol, total flavonoid, and vitamin C content, and antioxidant activity under various light quality condition, mainly focusing on red (R) to far-red (FR) light ratios in three Brassica sprouts (radish, Chinese cabbage, and broccoli). Three R/FR ratio of 0.6, 1.3, and 2.0 were exposed to 5-day old sprouts for 48 h in a controlled environment, and the targeted phytochemical contents and antioxidant activities were compared with three separate control plot of dark, fluorescent, and red:blue 8:2 conditions. Total GSL content was highest in broccoli among the cultivars throughout the respective treatments, and increased with the increasing of R/FR ratio in the broccoli sprouts, while the content showed non-significant results in the Chinese cabbage sprouts. The progoitrin, a major GSL in Chinese Cabbage and broccoli, content decreased by upto 38% and 69%, respectively, with decreasing the R/FR ratio compared to the control plots (fluorescent, red:blue 8:2, and dark condition). The contents of phenol, flavonoid, and vitamin C were lowest in dark condition in all the three Brassica sprouts. The total phenol content and antioxidant activities increased with decreasing the R/FR ratio in all the Brassica sprouts, while total flavonoid and vitamin C content showed different patterns depending upon the Brassica sprouts. These results suggest that additional use of FR is expected to improve the functional quality of Brassica sprouts in different ways.