• Title, Summary, Keyword: grape variety

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Physicochemical Properties of Different Grape Varieties Cultivated in Korea (국내에서 재배한 포도 품종간의 이화학적 특성 비교)

  • Ahn, Hyuk-Jin;Son, Hong-Seok
    • Korean Journal of Food Science and Technology
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    • v.44 no.3
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    • pp.280-286
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    • 2012
  • The aim of this study was to describe the effects of genetic factors on the chemical composition or metabolites of grapes harvested within the same region. Grapes were separated into pulp, skin, and seed, and physicochemical characteristics were compared among seven grape varieties. The sugar concentrations of the grape musts ranged from $15.17-20.93^{\circ}Bx$ with Seibel variety being highest at $20.93^{\circ}Bx$. pH ranges of grape musts were 3.46-4.02 and total acidity was highest with 1.05 in Steuben variety. Tartaric acid content was highest with 146.68, 500.10 mg/L in pulp and skin extract of Merlot variety. Malic acid content was highest in pulp extract of Seibel variety (1127.14 mg/L) and skin extract of Chardonnay variety (1720.06 mg/L). K content was highest with 379.13 and 828.01 mg/L in pulp and skin extract of Chardonnay variety. Ca content was highest in pulp extract of Kyoho variety (6.98 mg/L) and skin extract of Campbell Early variety (12.26 mg/L).

Comparison of the Antioxidative Effects and Content of Anthocyanin and Phenolic Compounds in Different Varieties of Vitis vinifera Ethanol Extract

  • Choi, Sang-Yoon;Lee, Yeon-Mi;Lee, Pyeong-Jae;Kim, Kyung-Tack
    • Preventive Nutrition and Food Science
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    • v.16 no.1
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    • pp.24-28
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    • 2011
  • This study was a quantitative HPLC analysis of four anthocyanins and five phenolic compounds contained in the skins, vines and seeds of the Campbell Early, Muscat Bailey A and Neo Muscat grape varieties. In the phenolic analysis, the seeds of the Campbell Early were found to contain 1.9, 1.8 and 1.6 times higher quantities of gallic acid, catechin and epicatechin relative to other grape seeds. Three anthocyanins, cyanidin, peonidin and pelargonidin, were also found to be higher in the skins of the Campbell Early relative to other grape skins. Therefore, the Campbell Early is the most useful grape variety with regard to the extraction of these six compounds from these grape seeds and skins. The free radical scavenging effects of grape seeds were also compared, and the results indicated that the Campbell Early seeds were most effective among them.

Evaluating the resistance to crown gall in grape rootstocks.

  • Park, Jeong-Ho;Yun, Hae-Keun;Park, Kyo-Sun;Lee, Chang-Hoo;Jeong, Sang-Bouk
    • Proceedings of the Korean Society of Plant Pathology Conference
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    • pp.70.2-70
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    • 2003
  • To evaluate the resistance to crown gall in grape rootstocks, cuttings from twenty seven grape rootstocks were inoculated with Agrobacterium vitis Cheonan 493 and size of galls from grapevines was measured in a greenhouse. Tumors were formed in all varieties of grape rootstocks tested in this study and no grape rootstock variety was immune to crown gall. Tumors were found on the stems of all plants tested in '196-17'and '41B' Based on measuring size and weight of galls formedon the stem of grape rootstocks, '779P' was extremely susceptible to crown gall. Some varieties such as 'Gloire', '140R', '101-l4M', '3309C', and '333EM' found to be resistant, while '99R', '1447P', 'Rupestris du lot', '110R', 'Freedom', and '41B'were susceptible and '1103P', '5C', '420A', 'Golia', and '5BB' were moderately susceptible to crown gall.

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Identification of Pathogens Causing Grape Rot on 'Red Glove' Variety Imported from Chile (칠레산 수입포도 '레드글로브' 품종에 발생한 부패병 병원균의 동정)

  • Song, Min-Ji;Lee, Hyok-In;Yea, Mi-Chi;Kim, Dae-Ho;Hong, Seung-Beom;Cha, Jae-Soon
    • Research in Plant Disease
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    • v.18 no.3
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    • pp.217-224
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    • 2012
  • Post-harvest rot of grape causes a severe economic loss and lower of the grape quality. It is also one of the important limiting factors for grape export. Grape rots and their casual agents on 'Red Globe' variety imported from Chile were identified. Grapes shown rotting symptom were collected from the storages near the import harbor. The 3 different rots were identified on the imported 'Red Globe'; melting decay, gray mold, and blue mold. A bacterium that isolated from a typical melting decay symptom was identified as Gluconobacter cerinus on basis of its nucleotide sequence of 16S rDNA and fatty acid profile. By inoculation on grape, it caused cracking and dissolution of epidermis of grape which were the characteristics of melting decay. Botrytis cinerea and Penicillium expansum were isolated from grapes showing gray mold and blue mold. The 2 fungal isolates were identified on basis of their morphological characteristics and nucleotide sequence of their beta-tubulin genes. They showed strong pathogenicity on 'Campbell Early' variety that is a major table grape in Korea.

Studies on the Grape Variety and the Selection of Yeast Strain for Wine-making in Korea (국내포도주(國內葡萄酒) 생산(生産)을 위(爲)한 포도(葡萄)의 품종(品種) 선택(選擇) 및 최적(最適) 효모(酵母) 균주(菌株)의 선발(選拔)에 관(關)한 연구(硏究))

  • Park, Yun-Hee
    • Applied Biological Chemistry
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    • v.18 no.4
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    • pp.219-227
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    • 1975
  • In order to investigate the possibility of wine-making with the grape variety cultivating in Korea, the basic analysises were carried out; analysis of the grape maturity during ripening period, the composition of grape juice, and the chemical components of wine from different varieties. Also the yeasts existing naturally on the grape were isolated and identified. For the selection of strain, the characteristics of 6 strains were studied. The results obtained were summarized as follows. 1. The reducing sugar content increased considerably during two weeks after the ordinary grape-gathering period. 2. The sugar content was highest in Muscat bailey A, which could be fermented naturally. The other varieties, Campbell Early, Steuben, and Alden needed chaptalisation for wine-making. 3. The permanaganate number and the methanol content of wine from all varieties were lower than french wine. 4. The sensory evaluation of wine showed that the pink wine was appreciated better than the red wine of same variety and the foxy taste of wine from hybrid grape influenced little to Korean. 5. The selected 6 strains were identified as Saccharomyces chevaliers, Saccharomyces capensis and Saccharomyces globosus. The strain No. 3 and No. 4 showed the most excellent characters for wine-making.

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A Study of Textural Properties and Preferences of Fruit Pectin Jelly (펙틴을 이용한 과즙젤리의 질감특성과 기호도 연구)

  • Choi, Ji-Young;Song, Eun-Seung;Chung, Hae-Kyung
    • Journal of the Korean Society of Food Culture
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    • v.9 no.3
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    • pp.259-266
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    • 1994
  • This study was done to evaluate the effects of grape variety, pH and sugar contents on textural and sensory properties of grape pectin jelly. As a gelling agent, pectin 1% was selected due to highest sensory scores in preparatory experiments and also nutritional and economical reasons. To get the proximate composition of grape extract, moisture, pH, reducing sugar, and total titratable acidity was measured. Grape pectin jellies, made by 12 different recipies, were tested by sensory and instrumental evaluatoin. The results were as follows; 1) Hardness and chewiness were lowered in grape jelly which has lower pH and lower sugar contents. 2) People preferred grape jelly which has lower hardness, brittleness and sweetness, and higher sourness. 3) Comparing overall quality, Recipe C1 in Jelly 1 and recipe B1 in Jelly 2 were chosen as best. 4) Sensory hardness showed positive correlation with instrumental hardness, brittleness and chewiness.

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Isolation and Stability of Anthocyanin Pigments in Grape Peels (포도파괴 Anthocyanin 색소의 분리 및 안전성)

  • Shim, Ki-Hwan;Kang, Kap-Suk;Choi, Jine-Shang;Seo, Kwon-Il;Moon, Ju-Seok
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.23 no.2
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    • pp.279-286
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    • 1994
  • Anthocyanins were isolated and identified from grape peels which were wasted much in Korea, and their characteristics were as follows .Isolated pigments from grape peels were 11 varieties such as 5 varieties of 3, 5-diglucoside (DG), 6 varieties of 3-monoglucoside (MG), and acylated pigment was 2 varieties of them. Malvidin was 4 varieties , petunidin , peonidin and delphinidin 2 varieties in each, and cyanidin 1 variety of 11 vareities. Malvidin -3, 5-diglucoside and peonidin -3, 5-diglucoside of anthocyanins were above 48% in total anthocyanins content of 114.99mg/g in dried skins. Breakdown of anthocyanins was higher become intimate neutral pH, but stable to stroage period for 7-days. Hyperchromic effects were showed when sugars were added in pigment extract of grape peels, the highest value was glucose and the next ordor was fructose and sucrose. Breakdown velosity of anthocyanins was higher when ascorbic acid was added, but its velocity was reduced in anaerobic state . Absorption degree by organic acid treatment was higher than control, and anthocyanins were stable to storage period for 7 days.

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Antimicrobial Activity of Extract from Gall-nut and Red-grape Husk (오배자와 포도 껍질 추출물의 항균 활성에 관한 연구)

  • 이만종;김관필;김성호;정낙현;임무현
    • The Korean Journal of Food And Nutrition
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    • v.10 no.2
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    • pp.174-179
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    • 1997
  • The antimicrobial and GTase(Glucosyltransferase) inhibition activity were investigated for solvent fractions of Gall-nut, variety of fork drugs and Red-grape husk water extracts. Among them, Gall-nut and Red-grape husk water extracts were selected for the powerful antimicrobial and GTase inhibition activity. The methanol fractions of Gall-nut and Red-grape husk were showed very powerful antimicrobial activity on both B. subtilis and E. coli. The MIC(Minimum Inhibitory Concentration) of gall-nut methanol fraction were 1.0mg/ml for B. subtilis and 3.0mg/ml for E. coli. Red-grape husk were 2.0mg/ml for B. subtilis and 3.0mg/ml for E. coli. The methanol fractions of Gall-nut and Red-grape husk were showed very powerful Gtase inhibition activity. The concentrations of these fractions for 80% inhibition of GTase activity were 1.08$\times$10-3mg/ml and 1.08$\times$10-2mg/ml, respectively. The principal compound for the antimicrobial and GTase inhibition activity in tese extracts seems to be polyphenol derivatives.

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Anthocyanin Composition and Characteristics of 'Gaeryangmeoru', 'Kyoho', and 'Hongisul' Grape Varieties ('개량머루', '거봉' 및 '홍이슬' 품종의 anthocyanin 조성과 특징)

  • Kwon, YongHee;Park, Hee-Seung
    • Horticultural Science & Technology
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    • v.33 no.4
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    • pp.470-478
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    • 2015
  • This study was investigated the anthocyanin composition of 'Gaeryangmeoru', 'Kyoho', and 'Hongisul' grapes cultivated in Korea using ultra-performance liquid chromatography (UPLC) coupled to a mass spectrometer (MS) equipped with an ESI (electrospray ionization) source. 'Gaeryangmeoru' is a dark-blue grape used for winemaking that can reach its coloring in unfavorable weather. The 'Kyoho' and 'Hongisul' varieties are hybrid grapes that feature black and pink skin, respectively. The anthocyanins extracted from the peels of grapes were analyzed using UPLC-ESI-MS/MS. Twenty-five anthocyanins were identified in the 'Gaeryangmeoru' and 'Kyoho' varieties, and 21 were identified in the 'Hongisul' variety. Eight, 14 and five predominant anthocyanins were identified in 'Gaeryangmeoru', 'Kyoho' and 'Hongisul' grape respectively. In all three varieties, mono-glucosides were 2.3-5.9 times more abundant than di-glucoside. Malvidin was the predominant anthocyanidin in 'Gaeryangmeoru' (44.1%) and 'Kyoho' (56.5%), but cyanidin (96.8%) was in 'Hongisul'. The acylated anthocyanins in 'Gaeryangmeoru' (2.0%) were rare, whereas acylated anthocyanins with p-coumaric acid were predominant in 'Kyoho' (40.9%) and 'Hongisul' (70.7%). In particular, cyanidin feruloyl glucoside was found only in the 'Hongisul' cultivar and considered to be useful as a criterion for identification of the variety. As a result, the grape varieties were demonstrated to have variety-specific anthocyanin characteristics, enabling classification based on anthocyanin composition in terms of anthocyanidins, glucosylation and acylation. The taxonomical application of anthocyanin composition confirmed the possibility that 'Gaeryangmeoru' originated from Vitis amurensis or its hybrids, and the 'Hongisul' grape was distinguished from other grapes by cyanidin feruloyl glucoside.