• 제목/요약/키워드: Seed extracts

검색결과 537건 처리시간 0.025초

Fungicidal Activities of 51 Fruit-Derived Extracts in vivo against Six Phytopathogenic Fungi

  • Lee, Hoi-Seon;Lee, Seon-Woo;Cho, Kwang-Yun;Kim, Moo-Key;Ahn, Young-Joon
    • Journal of Applied Biological Chemistry
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    • 제44권3호
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    • pp.147-153
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    • 2001
  • Methanol extracts from 51 fruits were tested for their fungicidal activities against six phytopathogenic fungi in a greenhouse. The efficacy varied with both the plant pathogen and fruit species used. At 10 and 5 mg/pot, methanol extracts of Poncirus trifoliata peel and seed gave over 80% control values against Pyricularia grisea, and strong fungicidal activities against Rhizoctonia solani were showed from the extracts of Citrus paradisi peel and Punica granatum leaf. In a test with Botrytis cinerea at 5 mg/pot, the extracts of C. sinensis seed and D. kaki leaf produced potent fungicidal activities, and the extracts of C. crenata peel and leaf, Ch. sinensis seed, P. trifoliata peel, and Z. jujuba leaf had strong fungicidal activities. At 5 mg/pot, strong fungicidal activities were produced in the extracts of P. trifoliata peel and seed against Phytophthora infestans and in the extracts of P. ussriensis var. macrostipes fruit and seed, C. crenata peel, C. crenata leaf, C. paradisi peel, P. trifoliata peel, P. granatum peel, and Z. jujuba leaf against Puccinia recondita. In a test with E. graminis, potent activities at 10 mg/pot were produced from the extracts of Ch. sinensis seed, C. sinensis seed, P. trifoliata leaf, P. ussriensis var. macrostipes fruit and seed, and Vitis vinifera seed. In the control effect of seven extracts against B. cinerea strains resistant to carbendazim, procymidone, and diethofencarb, extracts of C. crenata peel and leaf, Ch. sinensis seed, and P. trifoliata peel were highly effective against all strains of B. cinerea. Furthermore, potent fungicidal activities were produced from the extracts of C. sinensis seed and D. kaki leaf against the SSR, SRR, and RRS, and Z. jujuba leaf against the SSR and RRS strains. As a naturally occurring fungicide, these fruit-derived materials could be useful as new fungicidal products against phytopathogenic fungi.

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Effect of Red Pepper Seed on Kimchi Antioxidant Activity During Fermentation

  • Sim, Ki-Hyeon;Han, Young-Sil
    • Food Science and Biotechnology
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    • 제17권2호
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    • pp.295-301
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    • 2008
  • In this study, the antioxidant activities of red pepper seed kimchi extracts were examined. The extracts were evaluated by various antioxidant assays that included determinations of total phenolic and flavonoid contents, DPPH radical scavenging, superoxide anion radical scavenging, nitric oxide scavenging, superoxide dismutase (SOD) activity, metal chelating activity, and reducing power. All the kimchi extracts showed strong antioxidant activities by the tested methods. The 7% red pepper seed kimchi that was fermented for 6 days possessed the highest activity according to the performed tests. Yet, the highest scavenging activity was exhibited against nitrite, by extracts from kimchi for 0 day of fermentation rather than 6 days. All the activities for the kimchi fermented for 0 day with the addition of 7% red pepper seed increased markedly with an increase in concentration. With the exception of metal chelating and SOD activities, for the antioxidant properties assayed, the red pepper seed kimchi extracts were found to be highly effective.

당근추출물이 난소를 절제한 흰쥐의 혈중지질 및 항산화효소 활성에 미치는 영향 (The Effectsof Daucus carota L. Extracts on Serum Lipid and Antioxidative Enzyme Activity in Ovariectomized Rats)

  • 김미향;하배진;배송자
    • 생명과학회지
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    • 제10권1호
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    • pp.7-13
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    • 2000
  • The purpose of this study was to investigate whether the extracts of Daucus carota L. could lead to a beneficial outcomes on serum lipid and antioxidative enzyme activity in ovariectomized rats. Sprague-Dawley rats were randomly assigned to one control and three diet groups; carrot seed, carrot root and estrogen after ovariectomy operation. Experimental diets were fed for 8 weeks. The GOT activity was decreased in the carrot extracts treated group than in the control group. The carrot seed extracts treated group showed the lowest SOD and catalase activities compare to other groups. Serum total cholesterol and LDL cholesterol decreased in the carrot seed extracts group than in the control group. From these results, it suggest that carrot seed extracts positively influenced on serum lipid and antioxidative enzyme activity.

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고추씨 기름에 대한 다류 에탄올 추출물의 항산화 효과 (Antioxidative Effect of Ethanolic Extracts of Some Tea Materials on Red Pepper Seed Oil)

  • 정해정
    • 한국식품영양과학회지
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    • 제28권6호
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    • pp.1316-1320
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    • 1999
  • Antioxidative effect of ethanolic extracts of various tea materials(Camellia sinensis, Cassia tora, Lyc ium chinense, Polygonatum odoratum, Schizandrae chinensis) on red pepper seed oil was investigated. Ethanolic extracts were added to red pepper seed oil at a concentration of 0.05%(w/v). Two experimental conditions were employed : 50$\pm$0.1oC for 45 days and 150$\pm$3oC for 24 hours. Oxidation of red pepper seed oil was determined by measuring peroxide value and acid value. Electron donating ability(EDA) and total phenolic contents of each extract were also determined. The result showed that the extracts possess an antioxidative activities. The effectiveness of them was in the following order: C. sinensis>C. tora>P. odoratum>S. chinensis >L. chinense. Ethanolic extracts of C. sinensis showed substantially higher EDA value and total phenol contents than other tea materials. These results indicate that the antioxidative effect was strongly related with EDA and total phenol contents.

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Phytotoxic Effect of Xanthium occidentale Leaf Extract on Seed Germination and Early Seedling Growth of Alfalfa and Barnyard Grass

  • Chon, Sang-Uk
    • 한국작물학회지
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    • 제49권1호
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    • pp.30-35
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    • 2004
  • Compositae plants are known to contain biologically active substances that are allelopathic to agricultural crops as well as weed species. Aqueous extracts from leaves of Xanthium occidentale were assayed against alfalfa (Medicago sativa) to determine their allelopathic effects, and the result showed that the extracts applied onto filter paper significantly inhibited seed germination as well as root growth of alfalfa. Untreated seeds germinated in 60h, but extract concentrations greater than 30g $\textrm{L}^{-1}$ delayed seed germination. The extracts significantly inhibited seed germination of alfalfa, and $\beta$-amylase activity of alfalfa and barley seeds during 24-36 hours after treatment. Aqueous extracts of 40 g $\textrm{L}^{-1}$ from X. occidentale were completely inhibited the hypocotyl and root growth of alfalfa. Aqueous leaf extracts showed the highest inhibitory effect and followed by root and stem extracts. Early seedling growth of both alfalfa and barnyard grass (Echinochloa crus-galli) was significantly reduced by methanol extracts. By means of high-performance liquid chromatography, chlorogenic acid and trans-cinnamic acid were quantified as the highest amounts from water and EtOAc fractions, respectively. BuOH and EtOAc fractions of X. occidentale reduced alfalfa root growth more than did hexane and water fractions. The findings of the bioassays for aqueous or methanol extracts reflected that the inhibitory effect of extract was closely related to the level of responsible allelochemicals found in plant extracts.

머루종실의 용매별 추출물의 항산화 활성 비교 (Comparison of Antioxidant Activities of Wild Grape Seed (Vitis coignetiea seed) Extracts by Solvents)

  • 박현실
    • 한국조리학회지
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    • 제17권1호
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    • pp.270-279
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    • 2011
  • 본 연구는 머루 종실의 용매별 추출물을 이용하여 항산화 효과를 살펴봄으로서 머루 종실의 천연 항산화제로서의 가치를 확인하고 이용 가능성에 대한 기초자료를 제시하고자 하였다. 머루 종실의 ethanol 조추출물을 얻은 후 hexane, chloroform, ethyl acetate, butnol을 순차적으로 분획하였다. 머루 종실의 용매별 추출물의 총 페놀 화합물함량은 64.9 mg/100 g으로 ethyl acetate 추출물에서 가장 높은 함량을 보였으며, 전자공여능도 $100\;{\mu}L$/mL에서 90.0%로 대조구인 BHT 및 Ascorbic acid보다 활성이 높았으며, 농도가 증가함에 따라 전자공여능 역시 증가하는 경향을 보였다. 환원력 역시 농도가 $1,000\;{\mu}L$/mL일 때 ethyl acetate 추출물에서 2.83로 가장 뛰어난 활성을 보였다. $H_2O_2$, $FeCl_2$$CuSO_4$에 대한 항산화 활성도 머루 종실 용매별 추출물의 농도가 높 짐에 따라 유의적으로 활성이 증가하는 경향을 보였으며, ethyl acetate 추출물에서 가장 활성이 높았다. 아질산염 소거능은 pH 1.2의 반응조건에서 $1,000\;{\mu}L$/mL의 농도 첨가 시 ethyl acetate 추출물이 76.9%의 소거능을 나타내었다.

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Phenolic plant extracts are additive in their effects against in vitro ruminal methane and ammonia formation

  • Sinz, Susanne;Marquardt, Svenja;Soliva, Carla R.;Braun, Ueli;Liesegang, Annette;Kreuzer, Michael
    • Asian-Australasian Journal of Animal Sciences
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    • 제32권7호
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    • pp.966-976
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    • 2019
  • Objective: The methane mitigating potential of various plant-based polyphenol sources is known, but effects of combinations have rarely been tested. The aim of the present study was to determine whether binary and 3-way combinations of such phenol sources affect ruminal fermentation less, similar or more intensively than separate applications. Methods: The extracts used were from Acacia mearnsii bark (acacia), Vitis vinifera (grape) seed, Camellia sinensis leaves (green tea), Uncaria gambir leaves (gambier), Vaccinium macrocarpon berries (cranberry), Fagopyrum esculentum seed (buckwheat), and Ginkgo biloba leaves (ginkgo). All extracts were tested using the Hohenheim gas test. This was done alone at 5% of dry matter (DM). Acacia was also combined with all other single extracts at 5% of DM each, and with two other phenol sources (all possible combinations) at 2.5%+2.5% of DM. Results: Methane formation was reduced by 7% to 9% by acacia, grape seed and green tea and, in addition, by most extract combinations with acacia. Grape seed and green tea alone and in combination with acacia also reduced methane proportion of total gas to the same degree. The extracts of buckwheat and gingko were poor in phenols and promoted ruminal fermentation. All treatments except green tea alone lowered ammonia concentration by up to 23%, and the binary combinations were more effective as acacia alone. With three extracts, linear effects were found with total gas and methane formation, while with ammonia and other traits linear effects were rare. Conclusion: The study identified methane and ammonia mitigating potential of various phenolic plant extracts and showed a number of additive and some non-linear effects of combinations of extracts. Further studies, especially in live animals, should concentrate on combinations of extracts from grape seed, green tea leaves Land acacia bark and determine the ideal dosages of such combinations for the purpose of methane mitigation.

Allelopathy of Tagetes minuta L. Aqueous Extracts on Seed Germination and Root Hair Growth

  • Kil, Ji-Hyun;Shim, Kew-Cheol;Lee, Kyu-Jin
    • The Korean Journal of Ecology
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    • 제25권6호
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    • pp.395-398
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    • 2002
  • Present paper showed allelopahtic effects of Tagetes minuta aqueous extracts on seed germination and root hair development. Allelopathy of aqueous extracts derived from T. minuta examined using two test plant species (Lotus comiculatus var. japonicus and Lactuca sativa). The seeds of test species were inoculated in petri dishes containing 0, 10,50 and 100% aqueous extracts from T. minuta. At day 5, the relative seed germination ratio to control was evaluated, and the development of seedling root hairs was observed through light microscopy. Seed germination of L. comiculatus var. japonicus was significantly inhibited proportional to the concentrations of aqueous extract, but that of L. sativa wasn't inhibited. The inhibitory allelopathic effect of T. minuta was found in the development and growth of seedling root hairs. It was concluded that the inhibitory allelophatic effects have been to be investigated using various bioassay, for the allelopathy of plant species shows species-specific and organ-specific.

추출용매와 부위에 따른 고추 추출물의 세포독성 (Cytotoxicity of Extracts from Korean Pepper (Capsicum annuum L.) by Extraction Solvents and Plant Parts)

  • 최소라;김명준;안민실;송은주;서상영;최민경;김영선;최동근;송영주
    • 한국약용작물학회지
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    • 제22권5호
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    • pp.369-377
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    • 2014
  • In order to find out anticancer activity of Korean pepper (Capsicum annuum L.), the cytotoxicity against 8 cell lines including 293 (normal kidney cells) and A-431 (epidermoid carcinoma cells) of extracts by extraction solvents and plant parts were investigated using MTT assay. Also the correlation between content of capsaicin known as anticancer ingredient and cytotoxicity of extracts from pepper were analyzed. The distilled water extracts from seed and germinated seed showed very high cytotoxicity against 6 cancer cell lines including A549 (lung carcinoma cells), AGS (stomach adenocarcinoma cells), HeLa (cervix adenocarcinoma cells), HepG2 (hepatoblastoma cells), HT-29 (colon adenocarcinoma cells), and MCF-7 (breast adenocarcinoma cells). But 80% ethanol and methanol extracts showed cytotoxicity against 293 and AGS. The $RC_{50}$, that was, the concentration of sample required for 50% reduction of cell viability, of seed and germinated seed extracts against AGS were $33.4{\sim}389.1{\mu}g/m{\ell}$ and $63.9{\sim}1,316.7{\mu}g/m{\ell}$, respectively, so anticancer activity was higher in seed than in germinated seed. In capsaicin contents, seed with high cytotoxicity and pericarp with a little cytotoxicity contained $47.4{\sim}1,260.0{\mu}g/g$ and $58.3{\sim}1,498.0{\mu}g/g$, respectively. As these results, the correlation was not between cytotoxicity and capsaicin content.

결명자 에탄올 추출물 및 식이섬유의 이화학적 특성 (Physicochemical Properties of Ethanol Extracts and Dietary Fiber from Cassia tora L. Seed)

  • 홍경희;최원희;안지윤;정창화;하태열
    • 한국식품영양학회지
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    • 제25권3호
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    • pp.612-619
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    • 2012
  • This study was conducted to investigate the physicochemical properties of the ethanol extracts and soluble dietary fiber from Cassia tora L. seed. The proximate composition of Cassia tora, soluble solid contents, color intensity and contents of emodin and rhein of Cassia tora extract, molecular mass distribution, sugar contents and viscosity of soluble fiber from Cassia tora were analyzed. Cassia tora contains 12.6% of moisture, 5.2% of ash, 13.4% of crude protein, 7.2% of crude fat, 8.8% of insoluble fiber and 48.3% of soluble fiber. The effects of extract condition on soluble solid contents, color intensity and contents of emodin and rhein of Cassia tora extract were investigated. The soluble solid contents were higher in 70% or 50% ethanol extracts than those in 100% ethanol extracts and showed highest value in grind sample extracts. In Hunter's color value, 100% ethanol extracts and whole Cassia tora sample extracts were higher in L and b value, but on the contrary, were lower in a value, than those of the other. The highest emodin and rhein contents were observed in 70% and 50% ethanol extracts, respectively, and showed higher value in room temperature extracts than in heating extracts. The molecular mass of soluble fiber from Cassia tora seed was estimated by gel filtration chromatography. Most soluble fiber(80%) exhibited a molecular mass range of between 50~2000 kDa. The major sugars of soluble fiber from Cassia tora seed were identified as xylose, mannose and galactose. The apparent viscosity of 0.5% soluble fiber from Cassia tora seed was 33 mPas showing a higher value than pectin or xanthan gum.