• Title/Summary/Keyword: Ellagic

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Flavonoid Constituents of Acacia catechu (Acacia catechu의 플라보노이드 성분)

  • Hong, Seong Su;Choi, Yun-Hyeok;Suh, Hwa-Jin;Kang, Min-Jung;Shin, Jung-Hye;Kwon, Oh-Oun;Oh, Joa Sub
    • Journal of Applied Biological Chemistry
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    • v.58 no.2
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    • pp.189-194
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    • 2015
  • Ten compounds were isolated from the ethanolic extract of the leaves of Acacia catechu (Fabaceae), and their structures were identified as nine flavonoids [(+)-catechin (1), (-)-epicatechin (2), (+)-afzelechin (3), (-)-epiafzelechin (4), (+)-mesquitol (5), kaempferol (6), quercetin (7), quercetin 3-methyl ether (8), and caryatin (9)] and an ellagic acid (10). The chemical structures of these compounds were identified on the basis of spectroscopic methods (mass spectrometry, 1D and 2D nuclear magnetic resonance) and comparison with literature values. This is the first time that the isolation of caryatin (9) has been reported from Acacia genus.

Changes in Bioactive Compounds Contents of 'Maehyang' and 'Seolhyang' Strawberry Fruits by UV Light Illumination

  • Kim, Sung-Kyeom;Bae, Ro-Na;Chun, Chang-Hoo
    • Horticultural Science & Technology
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    • v.29 no.3
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    • pp.172-180
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    • 2011
  • The net photosynthetic rate of 'Seolhyang' strawberry plants was measured daily for 7 days after treatment at three UV illumination dosages (0, 9.8, and 29.5 $kJ{\cdot}m^{-2}$). The net photosynthetic rates of the strawberry plants with 9.8 and 29.5 $kJ{\cdot}m^{-2}$ UV light illumination decreased by 20.2 and 61.4%, respectively, at 7 days after UV light treatments. UV treatments with two illumination dosages (7.9 and 15.7 $kJ{\cdot}m^{-2}$) altered the phenolic compounds contents during the cultivation period when compared to those in the control fruits. The anthocyanin content with 7.9 $kJ{\cdot}m^{-2}$ UV light illumination of 'Seolhyang' increased by 18.7% compared with those in control fruits at the 11 DAT. However, the anthocyanin content of 'Maehyang' was not significantly different among treatments during experiment period. The highest level of ellagic acid was found with 7.9 $kJ{\cdot}m^{-2}$ UV light illumination in both cultivars at the 11 DAT. Our results showed that strawberries illuminated with UV light during cultivation period had higher bioactive compounds contents than control fruits. These results suggest that UV light treatments may be a useful non-chemical way of promoting strawberry fruits quality.

Antioxidative Activity of Solvent Fraction and Isolation of ANtioxidative Compound from Chestnut Husk (밤 귀피의 용매분획별 항산화 활성과 항산화 물질의 분리)

  • 권은정;김영찬;권미선;김창섭;강우원
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.30 no.4
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    • pp.726-731
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    • 2001
  • To enhance the utilization of chestnut husk discarded in the processing company antioxidative activities and compounds were investigated. Antioxidative activities of solvent fractions from chestnut husk were examined by benzoic acid hydroxylation method ferric thiocyanate method and DPPH test. Ethyl acetate fraction showed strong antioxidative activities comparable to BHA. Active compounds were isolated and purified from ethyl acetate fraction by Sephadex LH-20 column chromatography and preparative HPLC. A major active compound gallic acid was identified by $^{1}$H and $^{13}$ C-NMR. The phenolic acid contents was analyzed by GC and ellagic acid (172.22 mg%) and gallic acid (107.39 mg%) were major phenolic acid of chestnut husk.

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Simultaneous Determination of Anthraquinone, Flavonoids, and Phenolic Antidiabetic Compounds from Cassia auriculata Seeds by Validated UHPLC Based MS/MS Method

  • Girme, Aboli;Saste, Ganesh;Chinchansure, Ashish;Joshi, Swati;Kunkulol, Rahul;Hingorani, Lal;Patwardhan, Bhushan
    • Mass Spectrometry Letters
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    • v.11 no.4
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    • pp.82-89
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    • 2020
  • A systematic isolation and characterization study for Cassia auriculata (CA) seeds resulted in identifying antidiabetic compounds 1,3,8-trihydroxyanthraquinone and quercetin, quercetin-3-O-rutinoside, gallic acid, caffeic acid, ferulic acid, and ellagic acid. The ultra-high-performance liquid chromatography based triple quadrupole mass spectrometry methodology was developed and validated for simultaneous identification and confirmation of these compounds from CA seeds. Multiple reaction monitoring (MRM) based quantification method was developed with MRM optimizer software for MS1 and MS2 mass analysis. The method was optimized on precursor ions and product ions with the ion ratio of each compound. The calibration curves of seven bioactive analytes showed excellent linearity (r2 ≥ 0.99). The quantitation results found precise (RSD, < 10 %) with good recoveries (84.58 to 101.42%). The matrix effect and extraction recoveries were found within the range (91.66 to 102.11%) for the CA seeds. This is the first MS/MS-based methodology applied to quantifying seven antidiabetic compounds in CA seeds and its extract for quality control purposes.

Contents of Bioactive Constituents and Antioxidant Activities of Cultivated and Wild Raspberries (재배종 및 야생 산딸기의 기능성 성분 함량과 항산화 활성)

  • Lee, Heon Ho;Moon, Yong Sun;Yun, Hae Keun;Park, Pil Jae;Kwak, Eun Jung
    • Horticultural Science & Technology
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    • v.32 no.1
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    • pp.115-122
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    • 2014
  • In order to select the raspberry cultivars that have high contents of bioactive constituents and high antioxidant activities, 7 cultivated and 2 wild raspberries which were selected and cultivated in the Bokbunja Institute were evaluated for their physicochemical characteristics, bioactive constituents, and antioxidant activities. The wild raspberry of Asan was the smallest among the sample raspberries but it had the highest sugar and lowest acid contents among the raspberries. Another wild raspberry of Ulleungdo had the highest total phenolic compound and ellagic acid contents, 182.97, $55.25mg{\cdot}100g^{-1}FW$, respectively, although it was small and had low sugar and high acid contents. Among the widely cultivated raspberry cultivars in Kimhae, 'Wangttal' cultivar was a big raspberry with 12.80% sugar content, and another unknown raspberry cultivar was as small as the wild raspberry with 14.60% sugar content. Although 'Wangttal' and the unknown raspberry cultivars cultivated in Kimhae possess lower contents of total phenolic compound (159.62, $165.94mg{\cdot}100g^{-1}$) and ellagic acid (45.7, $52.1mg{\cdot}100g^{-1}$ ) than the wild raspberry of Ulleungdo, the contents of total flavonoids (14.28, $14.90mg{\cdot}100g^{-1}$) and total anthocyanins (28.69, $30.48mg{\cdot}100g^{-1}$) were higher. Also the wild raspberry of Ulleungdo, 'Wangttal', and the unknown raspberry cultivar of Kimhae had higher antioxidant activities measured by FRAP (Ferric reducing antioxidant power), DPPH (2,2-diphenyl-1-picrylhydrazyl), and ABTS (2,2' azinobis-(3-ethylbenzothiazoline-6-sulphonic acid) assays. The present study shows that three raspberry cultivars could be potent resources for raspberry breeding and functional material development.

Comparison of Chemical Composition and Radical Scavenging Activity of Pomegranate Extracts from Different Growing Areas

  • Lee, Hyun-Jung;Cho, Hye-Jin;Lee, Hyun-Sun;Kwon, Ki-Han;Hong, Yang-Hee;Kim, Seon-Hee;Suh, Hyung-Joo
    • Preventive Nutrition and Food Science
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    • v.14 no.3
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    • pp.214-219
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    • 2009
  • The pomegranate (Punica granatum L.) is a promising source of functional food, which contains several phytochemicals that perform important roles in reducing the risk of pathological diseases. Chemical compositions, such as the total sugar, uronic acid, polyphenols, and anthocyanin contents, and radical scavenging activity were determined and compared among PEs from six different cultivation areas. Total anthocyanin contents (TAC) and total polyphenol contents (TPC) from various growing areas were detected in the following order, respectively: Spain (19.08 ${\mu}g$/mL)> Turkey (12.91 ${\mu}g$/mL)> Iran-A (6.67 ${\mu}g$/mL)> Taiwan (4.77 ${\mu}g$/mL)> Uzbekistan (1.88 ${\mu}g$/mL)> Iran-B (0.76 ${\mu}g$/mL) and Turkey (639.52 ${\mu}g$/mL)> Uzbekistan (502.19 ${\mu}g$/mL)> Spain (306.40 ${\mu}g$/mL)> Iran-B (249.20 ${\mu}g$/mL)> Taiwan (162.78 ${\mu}g$/mL)> Iran-A (143.93 ${\mu}g$/mL). PEs from six different cultivation areas were determined to vary in ellagic acid content from 8.90 ${\mu}g$/mL to 332.52 ${\mu}g$/mL. The amounts of total sugars in PE from Iran-A evidenced relatively high total sugar contents, but low uronic acid levels (11.92 mg/mL). DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging activities were as follows: Turkey> Uzbekistan $\gg$ Spain> Iran-B> Iran-A> Taiwan. ABTS [2,20-azinobis(3-ethylbenzothiazoline-6-sulfonic acid)] radical scavenging activities were detected in the following order: Turkey$\geq$ Uzbekistan$\gg$ Spain> Iran-B> Iran-A> Taiwan. These results indicate that the PEs from Turkey with higher levels of TPC, TAC, ellagic acid, and higher radical scavenging activity may constitute a promising functional source for the prevention of several degenerative diseases.

Components of Potentilla Species -Isolation and Identification of 3, 3', 4-tri-O-methylellagic acid- (Potentilla속 식물의 성분연구 -3, 3', 4-tri-O-methylellagic acid의 분리 및 동정-)

  • Kim, Hack-Seang
    • YAKHAK HOEJI
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    • v.33 no.6
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    • pp.377-379
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    • 1989
  • The methylated compound of ellagic acid was isolated from Potentilla chinensis (Rosaceae). The isolated compound was 3, 3', 4-tri-O-methylellagic acid, [2, 3, 7-trimethoxy-8-hydroxy[1] benzopyrano-[5, 4, 3, cde][1] benzopyran-5, 10-dione], $C_{17}H_{12}O_8$, m.p. $293-295^{\circ}C$. The isolation of trimethylellagic acid was conducted by the column chromatography and the identification of the compound was carried out by the methods of IR, NMR and MS spectroscopy.

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Phenolic Compounds from the Leaves of Rubus coreanum (복분자 딸기 잎의 페놀성 물질)

  • 이민원
    • YAKHAK HOEJI
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    • v.39 no.2
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    • pp.200-204
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    • 1995
  • Chemical examination of the leaves of Rubus coreanum has led to the isolation and characterization of six phenolic compounds. The structures of these compounds were elucidated as kaempferol(l), quercetin(2), sodium salt of quercetin 3-O-$\beta$-D-glucuronide(3), sodium carboxylate of quercetin 3-O-$\beta$-D-glucuronide(4), ellagic acid(5) and sanguiin H-5(6) on the basis of physicochemical and spectroscopic evidences.

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Studies on the Pharmacological Actions and Biological Active Components of Korean Traditional Medicine (V) -Isolation of an Antimicrobial Phenolic Compound from Duchesnea indica- (한국전통생약의 약리작용과 활성물질에 관한 연구(V) -사매(蛇?)의 항균성분획의 페놀성물질-)

  • Lee, Ihn-Rhan;Lee, Yun-Sil;Han, Yong-Nam
    • YAKHAK HOEJI
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    • v.32 no.5
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    • pp.308-312
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    • 1988
  • A phenolic compound isolated from the ethylacetate extract of Duchesnea indica (Andr.) Focke (Rosaceae) showed antimicrobial activities against Staphylococcus aureus, Shigella dysentriae and Pseudomonas aeruginosa. This compound was identified as ellagic acid by spectral analysis.

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