• 제목/요약/키워드: total phenolics contents

검색결과 265건 처리시간 0.025초

Effect of natural anti-microbe chemicals, chitosan and stevia, on the growth, yield, and quality of chili peppers

  • Shim, Sang Wan;Kim, Hyuk Jin;Park, Jin Young;Bae, Tae Min;Min, Jeong Ho;Lee, Jin Su;Kim, Sung Joo;Hwang, Yong Soo
    • 농업과학연구
    • /
    • 제45권1호
    • /
    • pp.19-27
    • /
    • 2018
  • To study the effect of natural anti-microbial chemicals on the growth and quality of chili peppers, chitosan ($100mg/L^{-1}$), stevia ($250mg/L^{-1}$), and the mixture of both chemicals at the same concentration were sprayed after planting at 1-week interval throughout the experimental period. Plant height was measured twice after the $3^{rd}$ and $4^{th}$ applications. Plant height was numerically reduced in all chemical treatments compared to that of untreated control; however, there was no statistical difference between treatments. The fruit quality was examined at commercial maturity, and only minor differences were found in fruit color, length, and dry matter content between the treatments. Although a statistical difference was not present for soluble sugars levels, total phenolics, and capsaicin contents, yield in all chemical treatments significantly increased compared to untreated control. The effect on yield increase was greater at the late harvest season regardless of treatments. Total yield of 4 harvests was higher for the chitosan treatment than other treatments. During the experiment, the entire experimental field was waterlogged for 1 day due to sudden heavy rainfall, which resulted in the occurrence of bacterial browning disease in all treatments. The rate of disease occurrence and the degree of severity, however, were much lower in the chitosan treatment. In conclusion, the potential of chitosan as an alternative antimicrobial agent was confirmed in chili peppers in this study. Further research is required on stevia as an alternative chemical for disease control in chili peppers.

녹즙의 항산화 영양성분 분석 (Analysis of Antioxidant Nutrients in Green Yellow Vegetable Juice)

  • 정소영;김현위;윤선
    • 한국식품과학회지
    • /
    • 제31권4호
    • /
    • pp.880-886
    • /
    • 1999
  • 본 연구에서는 녹즙재료로 많이 이용되고 있는 신선초, 케일, 당근, 샐러리, 오이로 각각 녹즙을 제조하고 함유되어 있는 항산화 영양성분들을 측정하였다. 그 결과 5가지 녹즙에는 항산화 영양성분인 ${\beta}-carotene$, 비타민 E, 비타민 C, Se, Ca, Mn, Zn, 페놀물질들이 함유되어 있었다. ${\beta}-carotene$의 함량은 쥬스 100 g 당 당근이 59.09 mg, 케일이 3285.3 mg, 신선초가 1398.3 mg, 샐러리가 176.7 mg 오이가 61.4 mg이었다. ${\alpha}$-토코페롤의 함량은 케일녹즙이 1.41 mg/100 g으로 가장 높았고, 샐러리 녹즙에는 0.04 mg/100 g이 함유되어 있어 가장 낮게 나타났다. 케일 녹즙은 비타민 C 함량도 녹즙 100 g당 105.1 mg으로 가장 높았고 그 다음은 신선초 31.4 mg, 오이 9.3 mg, 샐러리 7.5 mg, 당근 5.2 mg 순이었다. 항산화성 무기질은 대체로 신선초에 가장 많이 함유되어 있었다. 그 양을 보면 녹즙 100 g당 Cu가 0.4 mg, Mn 0.5mg, Zn 0.24mg이고 Se은 녹즙 kg당 0.61 mg이었다. 케일녹즙에는 100 g당 Cu 0.45 mg, Mn 0.22 mg, Zn 0.24 mg이었다. Se는 1kg 당 0.33 mg로 신선초 다음으로 많은 항산화성 무기질을 함유하고 있었다. 그러나 샐러리와 오이에 함유되어 있는 황산화성 무기질의 양은 유의적으로 낮았다. 총 페놀 물질함량은 5가지 녹즙에서 $0.01{\sim}0.05%$이었으며 케일 녹즙이 가장 많은 페놀물질을 함유하고 있었다.

  • PDF

Foliar Application of Growth Bioregulators Influences Floral Traits, Cormassociated Traits and Chemical Constituents in Gladiolus grandiflorus L.

  • Sajjad, Yasar;Jaskani, Muhammad Jafar;Qasim, Muhammad;Akhtar, Gulzar;Mehmood, Asim
    • 원예과학기술지
    • /
    • 제33권6호
    • /
    • pp.812-819
    • /
    • 2015
  • Gladiolus is one of the most popular cut flowers in the world floral market and is highly attractive to consumers. The production of poor-quality gladiolus spikes is one of the most important hurdles to obtaining high prices for this crop. The main objectives of this study were to improve the quantitative characteristics of gladiolus spikes, to increase propagule production and to enhance chemical constituent levels in leaves to help improve plant growth. We performed foliar application of bioregulators, including polyamines (putrescine and spermine) and vitamins (ascorbic acid and thiamine), at different concentrations (0, 0.1, 0.4, 0.7 and 1 mM) to gladiolus plants at the three leaf, five leaf and slipping stages. Application of 1 mM putrescine was the most effective treatment, with prominent effects on economically important spike traits including spike length (55.53 cm), spike diameter (7.53 mm), florets per spike (13.99), first floret diameter (9.66 cm) and first floret weight (4.90 g), followed by spermine treatment. The 1 mM putrescine treatment also had positive effects on corm-associated traits including corm diameter and corm weight, with values of 4.57 cm and 26.16 g compared to 3.47 cm and 17.16 g in control plants, respectively. The contents of chemical constituents in leaves, including total chlorophylls ($8.06mg{\cdot}g^{-1}$), total carotenoids ($1.66mg{\cdot}g^{-1}$), total soluble sugars ($4.75 mg{\cdot}g^{-1}$) and phenolics ($0.89mg{\cdot}g^{-1}$) increased in response to foliar application of 1 mM putrescine compared to the control. Ascorbic acid and thiamine also had positive effects on various plant morphological traits and chemical constituents in leaves compared to control plants, but the growth-promoting effects of polyamines were more pronounced. Hence, applying polyamines to gladiolus leaves will help improve spike production and increasing propagule (cormel) yields.

Antioxidant and Oxygen Radical Scavenging Capacities of the Extracts of Pear Cactus, Mulberry and Korean Black Raspberry Fruits

  • Lee, Joon-Hee;Whang, Jung-Bin;Youn, Na-Ri;Lee, Sun-Young;Lee, Hyang-Jung;Kim, Young-Jun;Koh, Kyung-Hee
    • Preventive Nutrition and Food Science
    • /
    • 제14권3호
    • /
    • pp.188-194
    • /
    • 2009
  • In this study, we evaluated the phytochemical compositions of the fruits of the pear cactus, mulberry, and Korean black raspberry to determine how they related to antioxidant capacity. Specifically, the total soluble polyphenol, flavonoid and anthocyanin contents were determined, and the phenolic compounds were evaluated by HPLC. In addition, the antioxidant capacity was evaluated by electron paramagnetic resonance (EPR), SOD-like activity and nitrate scavenging activity. Korean black raspberry was found to have the highest level of phytochemicals, followed by mulberry and pear cactus (p<0.05). Furthermore, EPR revealed that Korean black raspberry extract (100 ${\mu}g$/mL) removed 78.6% of the superoxide radicals in a xanthin-xanthin oxidase. Additionally, when the removal of hydroxyl radicals was evaluated, the extract of pear cactus showed 50% scavenging activity at 1000 ${\mu}g$/mL. Korean black raspberry extract showed the highest SOD-like activity, which was 44% (p<0.05). Finally, the nitrate scavenging activity of both extracts of mulberry and Korean black raspberry were found to be 93%, while that of the pear cactus was 63% at pH 1.2 (p<0.05).

Characterization of Antioxidant Activities from Chestnut Inner Skin Extracts

  • Jeong, Chang-Ho;Choi, Gwi-Nam;Kim, Ji-Hye;Kwak, Ji-Hyun;Choi, Sung-Gil;Heo, Ho-Jin
    • Food Science and Biotechnology
    • /
    • 제18권5호
    • /
    • pp.1218-1223
    • /
    • 2009
  • Total phenolics and antioxidant activities of water and 80% methanol extract of chestnut inner skin were investigated. The antioxidant properties of both extracts of chestnut inner skin were evaluated using different antioxidant tests, including 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) radical scavenging activities, reducing power, ferric reducing ability of plasma (FRAP), and inhibitory effects on ${\beta}$-carotene bleaching. The 80% methanol extract of inner skin exhibited the higher DPPH, ABTS radical scavenging activities, reducing power, and FRAP than water extract of inner skin and did also in a concentration-dependent manner. However, inhibitory effects on ${\beta}$-carotene bleaching of 80% methanol extract was similar to those of water extract, 35.09 and 39.07% at 1 mg/mL, respectively. The total phenolic contents of water and 80% methanol extract from chestnut inner skin were 5,801.42 and 9,735.56 mg/100 g, respectively. High performance liquid chromatography (HPLC) analysis showed that gallic acid was the predominant phenolic compound in water and 80% methanol extract from inner skin. These water and 80% methanol extracts of chestnut inner skin can be utilized as an effective and safe source of antioxidants.

Evaluation of the Antioxidant Capacity and Phenolic Content of Agriophyllum pungens Seed Extracts from Mongolia

  • Birasuren, Bayarmaa;Kim, Na Yeon;Jeon, Hye Lyun;Kim, Mee Ree
    • Preventive Nutrition and Food Science
    • /
    • 제18권3호
    • /
    • pp.188-195
    • /
    • 2013
  • Antioxidants are an important group of medicinal preventive compounds as well as being food additives inhibiting detrimental changes of easily oxidizable nutrients. The present investigation has been carried out to evaluate the antioxidant properties of different solvent extracts of Agriophyllum pungens seeds by various in vitro systems. The antioxidative activities of these samples were determined using four methods: 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2'- azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging activity, ferric-reducing antioxidant potential (FRAP), and hydroxyl (OH) radical scavenging activities. Additionally, total flavonoids and phenolic contents (TPC) were also determined. Yield of extracts varied widely among solvents and was the highest for water extract (5.642% based on dry weight basis), while ethyl acetate extract exhibited the highest total phenolic content (0.149 mg/mL), total flavonoid content (0.111 mg/mL), and antioxidant activities (P<0.05). The ABTS radical scavenging activity of A. pungens seeds occurred in the following order: ascorbic acid (92.9157%)>BHA (90.1503%)> ${\alpha}$-tocopherol (87.7527%)>APEA (83.9887%) >APWR (75.5633%); the antioxidant activity of the extracts might be attributed to the presence of these phenolics. This suggests that A. pungens seed extract is a potential source of natural antioxidants, which could be added to dietary supplements to help prevent oxidative stress.

국내 유통 중인 식용식물 추출물의 항산화효과 (Anti-oxidative Activities of Commercial Edible Plant Extracts Distributed in Korea)

  • 김경범;유기환;박하얀;정종문
    • Applied Biological Chemistry
    • /
    • 제49권4호
    • /
    • pp.328-333
    • /
    • 2006
  • 많은 식물 추출물들은 항산화 효능을 지니고 있으나 대량 생산 공정시 그들의 활성을 잃어버리는 경향이 있다. 따라서 본 본문에서는 대량 생산 공정을 거쳐 국내 유통 중인 43종의 식용식물 추출물을 대상으로 총 페놀 함량, DPPH 라디칼 포착 효능, 그리고 superoxide anion 라디칼 포착 효능을 측정하였다. 그 결과 개똥쑥(Artemisia annua, whole plant), 마태(Ilex paraguariensis leaf), 엉겅퀴(Silybum marianum, fruit 그리고 leaf), 유근피(Ulmus pumila, bark), 운지버섯(Coriolus versicolor, fruit) 그리고 울금(Curcuma longa, root 그리고 stem) 추출물은 70 mg/g 이상의 높은 페놀화합물을 함유하는 것으로 나타났다. DPPH 라디칼의 포착 효능에서 개똥쑥, 마테, 솔잎(Pinus densiflora, leaf), 엉겅퀴, 유근피, 그리고 울금 추출물의 $SC_{50}$ 값 측정 결과 각각 $53.96{\pm}0.81ppm,\;24.61{\pm}2.12ppm,\;35.96{\pm}1.11ppm,\;57.45{\pm}2.13ppm,\;55.25{\pm}1.65ppm$ 그리고 $12.99{\pm}1.67ppm$으로 나타났다(비타민 C의 $SC_{50}$값: $3.86{\pm}0.81ppm$). 또한 superoxide anion 라디칼 포착 효능에서는 개똥쑥, 계피(Cinnamomum zeylunicum, bark), 마테, 복분자(Rubus coreanus, fruit 그리고 leaf), 상엽(Morus alba, leaf), 솔잎, 엉겅퀴, 유근피, 운지버섯, 울금, 자소엽(Perilla frutescens var. acuta, leaf) 그리고 히비스커스(Hibiscus sabdariffa, leaf) 그리고 flower) 추출물의 $SC_{50}$ 값 측정 결과 각각 $53.21{\pm}1.83ppm,\;50.12{\pm}2.12ppm,\;5.59{\pm}0.84ppm,\;41.60{\pm}8.93ppm,\;20.19{\pm}0.97ppm,\;15.19{\pm}1.66ppm,\;21.20{\pm}1.88ppm,\;15.71{\pm}0.91ppm,\;55.48{\pm}2.42ppm,\;52.12{\pm}2.44ppm,\;23.80{\pm}1.98ppm$ 그리고 $11.14{\pm}0.51ppm$인 것으로 나타났다(비타민 C의 $SC_{50}$ 값:$9.61{\pm}0.93ppm$). 특히 마테 추출물과 솔잎 추출물은 총 페놀 함량이 높으면서 DPPH 라디칼과 superoxide anion 라디칼을 동시에 효율적으로 포착하는 효능을 지니고 있는 것으로 나타났다. 결론적으로 마테와 솔잎의 상업적인 추출물은 기능성 항산화제로서 유용한 소재로 사용 가능 할 것으로 사료된다.

한국산 파프리카의 품종별 화학성분 (Chemical Components of Korean Paprika According to Cultivars)

  • 정창호;고웅혁;조정래;안철근;심기환
    • 한국식품저장유통학회지
    • /
    • 제13권1호
    • /
    • pp.43-49
    • /
    • 2006
  • 한국산 파프리카의 품종별 성분분석을 통하여 식품 재료로서의 활용 및 가공품 제조를 위한 기초자료로 활용하기 위하여 화학성분을 분석하였다. President, Special 및 fiesta 품종에서 가용성 무질소물이 각각 6.64, 6.22 및 $6.01\%$로 나타났으며, 조지방과 조섬유의 함량은 세 가지 품종 모두 유사하게 나타났다. 파프리카에 함유되어 있는 주요 무기 성분으로는 $K(83.41\~152.98 mg\%),\;Mg(28.66\~39.46mg\%)$$Mn(10.34\~18.96\;mg\%)$이었으며, 세 가지 품종중 Special과 Fiesta 품종보다 President품종에서 K함량이 높게 나타났다. 파프리카의 주요 유리당은 glucose$(1.36\~1.45\%)$와 fructose$(0.06\~1.53\%)$로 나타났다. 파프리카의 품종별 총 아미노산 함량은 Special 품종 $1,168.08\;mg\%$, President 품종 $1,112.97\;mg\%$ 및 Fiesta 품종 $874.79\;mg\%$로 나타났으며, 파프리카의 주요 아미노산은 lysine, aspartic acid및 glutamic acid였다. 파프리카에 많이 함유되어 있는 유기산으로는 tartaric acid$(2.34\~4.32\;mg\%)$, succinic acid$(2.01\~2.42\;mg\%)$ 및 malic acid$(0.67\~1.72\;mg\%)$로 나타났다. 파프리카는 8종류의 지방산이 동정되었으며, 주요지방산은 stearic acid$(15.11\~34.68\%)$와 linoleic acid$(32.12\~60.36\%)$로 나타났다. 비타민 C 함량은 Special 품종 $263.45\;mg\%$, President 품종 $284.24\;mg\%$ 및 Fiesta 품종 $206.34\;mg\%$로 나타났으며, 총 페놀 및 카로테노이드 함량은 Special과 Fiesta 품종보다 President 품종에서 가장 높은 함량을 나타내었다.

식물공장에서 생산된 새싹인삼의 생육 시기에 따른 영양성분 및 항산화 활성 변화 (Changes of nutritional constituents and antioxidant activities by the growth periods of produced ginseng sprouts in plant factory)

  • 성진아;이희율;김수철;조두용;정재각;김민주;이애련;정종빈;손기호;조계만
    • Journal of Applied Biological Chemistry
    • /
    • 제65권3호
    • /
    • pp.129-142
    • /
    • 2022
  • 새싹인삼은 잎부터 뿌리까지 섭취가 가능하며 스마트 팜 또는 식물공장에서 재배 시 계절에 영향을 받지 않으며 농약을 사용하지 않아도 되는 이점이 있다. 본 연구에서는 새싹인삼의 최적 재배 시기를 확인하고 영양성분과 항산화 활성을 비교 분석하였다. 생육 시기에 따른 지방산과 무기질 함량은 큰 차이를 보이지 않았다. 총 아미노산 함량은 45일까지 약간 감소하였고 이후에는 증가하였으며 생육 65일 arginine 함량은 3309.11 mg/100 g으로 가장 높게 확인되었다. 총 ginsenoside 함량은 생육기간 동안 큰 변화가 없었다(25일 29.83 mg/g→45일 32.77 mg/g→65일 26.02 mg/g). Ginsenoside Rg2 (0.62 mg/g), Re (8.69 mg/g), Rb1 (4.75 mg/g) 및 Rd (3.47 mg/g)의 함량은 생육기간 중 45일에 가장 높았다. Phenolic acids와 flavonols 함량은 생육 45일 (338.6 및 1277.14 ㎍/g)까지 증가 후 65일까지 감소하였다. Phenolic acids와 flavonols의 주요 화합물은 각각 benzoic acid (99.03-142.33 ㎍/g)와 epigallocatechin (416.03-554.64 ㎍/g)로 확인되었다. DPPH (44.27%), ABTS (75.16%)와 hydroxyl (63.29%) 라디칼 소거활성 및 FRAP 환원력(1.573 OD573nm) 또한 총 phenolics 및 총 flavonolids 함량과 마찬가지로 생육 45일에 가장 높은 활성을 보였다.

초석잠 첨가 식빵의 항산화 활성 (Antioxidative Properties of Chinese Artichoke (Stachys sieboldii Miq) added White Bread)

  • 전기숙;박신인
    • 한국조리학회지
    • /
    • 제21권6호
    • /
    • pp.120-132
    • /
    • 2015
  • 본 연구는 초석잠을 기능성 소재로서 식품 개발에 이용을 확대하기 위한 기초자료를 제공하고자 하였다. 초석잠 분말의 첨가량을 0, 3, 6, 9, 12%로 달리하여 식빵을 제조하고, 페놀성 화합물의 함량과 항산화 활성을 분석하고 기호도 검사를 실시하였다. 초석잠 분말의 총 폴리페놀, 총 플라보노이드 및 총 탄닌의 함량은 각각 $139.09{\pm}1.97mg\;GAE/g\;dw$, $74.33{\pm}2.69mg\;QE/g\;dw$, $40.41{\pm}2.54mg\;TAE/g\;dw$로 분석되었다. 초석잠 분말의 첨가량이 많아질수록 식빵의 페놀성 화합물 함량은 유의적으로 증가하여 초석잠 분말을 12% 첨가한 식빵의 총 폴리페놀, 총 플라보노이드과 총 탄닌의 함량은 각각 $104.27{\pm}0.13mg\;GAE/g\;dw$, $71.03{\pm}1.75mg\;QE/g\;dw$$8.76{\pm}0.12mg\;TAE/g\;dw$이었다(각각 p<0.001, p<0.001, p<0.001). 초석잠 추출물의 DPPH 라디칼과 ABTS 라디칼 소거능의 $IC_{50}$은 각각 1.42 mg/mL와 1.57 mg/mL로 분석되었으며, 초석잠 분말의 첨가량이 많아질수록 식빵의 항산화 활성은 유의적으로 높아졌다(각각 p<0.001과 p<0.001). 초석잠 분말을 9% 첨가한 식빵은 외관, 향미, 맛, 질감 및 전반적인 기호도가 가장 높게 평가되어 소비자의 기호도를 충족시키면서 항산화 활성을 지닌 기능성 식빵의 제조에 적합한 것으로 생각된다.