• Title/Summary/Keyword: Soaking Day

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Effect of Gibberellin and Kinetin on Bud Dormancy Breaking and Growth of Korean Ginseng Root (Panax ginseng C.A. MEY.) (고려인삼의 근아휴면타파와 생육에 대한 Gibbrerllin과 Kinetin의 효과)

  • Park, Hoon;Kim, Kap-Sik;Bae, Hyo-Won
    • Journal of Ginseng Research
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    • v.3 no.2
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    • pp.105-112
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    • 1979
  • Effect of gibberllin on the breaking of bud dormancy of root and growth of aerial parts were investigated under laboratory and field condition for the prolongation of shoot growth duration, shortening of fruit bearing age and the increase of root yield. Drop application of GA (0.5ml of 50ppm) on rhizome of one year old root broke bud dormancy better than by low temperature. Soaking for one hour of one year old roots which wintered in the field in GA (50-200ppm) greatly accelerated the emergence of new buds while kinetin was only effective at low level (50ppm). GA substantially increased stem length in early stage and petiole length later on while kinetin increased stem diameter. Under the field condition with polythylene film tunnel (PET) in early spring the soaking in GA (50ppm for 1 hour) of rhizome of 4 year old root with replanting and dropping GA (50ppm, 1ml) on rhizome without replanting brought earlier emergence (29days) in comparison with that in the usual field. PET alone caused 14 day-early emergence. GA increased the length of stem and petiole only in early stage and replanting decreased only petiole length in later stage. Soaking in GA with replanting caused the Pronounced decrease in peduncle length, percentage of (ruin set and dry weight of reproductive organ (fruits and peduncle). Dropping without replanting showed significant decrease only in dry weight of reproductive organ. Fruit maturing was 20 days earlier than in usual held with little difference between GA and PET. It is well expected that GA could be used for early emergence of bud, shortening of root dormancy period, thinning of fruit and higher root yield according to application amount and methods.

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Studies on the Lipid Rancidity and Rheology of Yackwa During Storage (약과 저장시의 산패정도와 물성에 관한 연구)

  • 박금미
    • Korean journal of food and cookery science
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    • v.13 no.5
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    • pp.609-616
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    • 1997
  • The contents of crude lipids of Yackwa was especially high of 24.4%. After 30 days of storage, the acid value, TAB and the carbonyl value were 2.0, 1.3, and 1.4 times higher than the initial storage, respectively. Soaking in syrup prevented moisture loss and the progression from lipid oxidation to quality deterioration, and addition of ginger juice showed the slightly lower in lipid rancidity. When compared with the unsoaked group, the L value of the soaked group were lower during the 30-day storage. As for the textural changes during storage, elasticity and chewiness decreased slightly. It was hypothesized that the textural changes were affected not by the ginger juice or the storage period, but by soaking in syrup.

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Microbiological Properties of Oiji (Korean Pickled Cucumbers) by the Addition of Pulsatilla koreana (할미꽃(백두옹, Pulsatilla koreana) 첨가량에 따른 오미지의 미생물학적 특성)

  • Han Bok-Ryo;Moon Hye-Kung;Jo Jung-Soon;Kim Jong-Kook;Kim Gwi-Young;Kim June-Han
    • Journal of the East Asian Society of Dietary Life
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    • v.15 no.5
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    • pp.613-618
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    • 2005
  • This study was performed to analyze the microbiological properties of Oiji soaking solution and Oiji preserved with $7\%$ brine and the others preserved with Pulsatilla koreana additives of various concentration$(0,\;3,\;6,\;9\%)$ during fermentation(24 days) at room temperature$(20\pm2^{\circ}C)$. The results of this experiment are as follows: The total number of microbes showed radical increase up to 6th day of growth period and decreased afterwards. Growth of microbes was impeded in the beginning of fermentation in the case of adding $6\%$ Pulsatilla koreana. The number of lactic acid bacteria tended to increase progressively until 15th day and then decreased, and that in the group of $6\%$ Pulsatilla koreana was relatively lower than those of other groups. Antimicrobial activity against Staphylococcus aereus and Micrococcus luteus was shown weakly from 9th day of fermentation regardless of the concentration of Pulsatilla koreana additives, but inactivated after 21st day of fermentation.

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Relationship between biomass components dissolution (xylan and lignin) and enzymatic saccharification of several ammonium hydroxide soaked biomasses (초본류 3가지 암모니아수 침지 처리에서 바이오매스 성분(자이란과 리그닌) 용출 정도와 효소당화의 관계)

  • Shin, Soo-Jeong;Han, Sim-Hee;Cho, Nam-Seok;Park, Jong-Moon
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.42 no.1
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    • pp.35-40
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    • 2010
  • Corn stover, hemp woody core and tobacco stalk were treated by dilute ammonium hydroxide soaking for improving the enzymatic saccharification of cellulose and xylan to monosaccharides by commercial cellulase mixtures. As more lignin removal by dilute ammonium hydroxide impregnation led to more enzymatic saccaharification of cellulose and xylan to monosaccharides (corn stover vs tobacco stalk). There was no relationship between xylan removal by dilute ammonium hydroxide impregnation and enzymatic saccharification of polysaccharides in pretreated samples. Except corn stover, lower temperature and longer treatment ($50^{\circ}C$-6 day) was less lignin removal than higher temperature and shorter treatment ($90^{\circ}C$ 16 h). Corn stover showed the highest enzymatic saccharification of cellulose and xylan but tobacco stalk showed the lowest.

The water absorption of wood by water-soaking time (수침시간(水浸時間)에 의(依)한 목재(木材)의 흡수성(吸收性))

  • Lee, Won Yong
    • Journal of Korean Society of Forest Science
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    • v.7 no.1
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    • pp.3-7
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    • 1968
  • The Capacity of wood to absorb water is very important as the basis data for wood industry, particularly in preservatives impregnation, manufacturing of improved wood, selection of packing boards, etc. In this study differences in Water absorbing Capacity of wood by structual section, water soaking time were investigated. (1) The species used in this investigation were Larix olgensis Henry Var. Koreana Nakai and Juglans mandshurica Max., and dimension of these testing wood block was $30{\times}30{\times}100cm$; and these were soaked in fresh water of $25{\pm}1^{\circ}C$ for 8.5day and 0.5 day, before measurement. (2) The result showed that the water absorption by cross sections was greater than by either radial or tangential section and there were no differences between radial and tangential section. (3) The water absorption of Juglans mandshurica Max. which has the relatively low specific gravity was greater than Larix olgensis Henry Var. Koreana Nakai which has generally high specific gravity. (4) The result showed an increase in the absorbed water with increase in the length of soaking time. However the water absorption rate during the early period of soaking was very high and thereafter the rate decreased with passage of time. More than a half of the total water absorption was achieved during the first 2 days approximately. (5) The relationships between the length of the soaking-time and water absorption were found to be as follows : Larix olgensis Henry Var. Koreana Nakai Cross section : $y=111.1{\times}^{0.6516}$ radial section : $y=32.2{\times}^{0.5146}$ tangential section : $y=36.5{\times}^{0.5112}$ Juglans mandshurica Max. Cross section : $y=216.1{\times}^{0.5914}$ radial section : $y=27.9{\times}^{0.5832}$ tangential section : $y=50.9{\times}^{0.4769}$ Where : y is amount of water absorption ($mg/cm^2$) x is water-soaking time (days).

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Physical and Sensory Characteristics of Laver Bugak (Korean Traditional Fried Dishes) During Fermentation of Starch Batter (찹쌀의 수침시간에 따른 김부각의 물리적·관능적 특성 연구)

  • Yang, Jeong-Eun;Lee, Ji-Hyeon;Song, Yeong Ok;Choe, Eunok;Chung, Lana
    • Journal of the Korean Society of Food Culture
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    • v.31 no.3
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    • pp.250-260
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    • 2016
  • This study was conducted to determine the reasonable soaking period of glutinous rice for laver Bugak (Korean traditional fried dishes) processing and to identify the sensory characteristics of three kinds of laver Bugak made with different starch pastes: GRice_1d using glutinous rice soaked for 1 day; GRice_7d using glutinous rice fermented for 7 days; and Wheat using flour. Descriptive analysis was performed by 10 trained panelists, and the 92 consumers evaluated the overall acceptance (OL), acceptance of appearance (APPL), odor (ODL), flavor (FLL), and texture (TXTL) of the samples using a 9-point hedonic scale. From the measurement result by scanning electron microscope (SEM), there were differences in the surface characteristics among soaking period for 1 day and 7 days. Ten panelists were trained, and they evaluated the appearance, odor/aroma, flavor/taste, texture/mouth feel, and after taste attributes of these samples. 36 attributes were generated by panelists and 12 attribute were significantly different across products (p<0.05). It was found that the Grice_7d sample was characterized by mouthfeel of crispiness and uniformity of bubbles, and the Wheat sample was characterized by surface of roughness, mouthfeel of crispiness and adhesiveness, relatively. And the Grice_1d sample was characterized by surface of roughness, mouthfeel of roughness, hardness, cohesiveness, toughness, and adhesiveness.

The effect of Green tea powder levels on Storage Chracteristics of Tofu (녹차가루 첨가 두부의 저장 특성)

  • 정지영;조은자
    • Korean journal of food and cookery science
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    • v.18 no.2
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    • pp.129-135
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    • 2002
  • The effects of adding green tea powder on the quality and storage characteristics of tofu were studied. As the addition of green tea powder increased, the moisture content of tofu was decreased but those of crude protein and the crude ash were increased. The addition of green tea powder increased the production of whey and consequently decreased the yield of tofu. At the beginning of storage, the pH of the tofu with green tea powder was increased, but decreased rapidly at the eighth day of storage. The pH of tofu-soaking solution was decreased during the storage period. The L and b values showed no significant changes but a value was increased during storage. Textural characteristics of tofu added with green tea powder also did not show significant changes during storage. Although the total plate counts and absorbances of soaking solution of tofu were increased during storage, the samples with 1.0% green tea powder had the lowest TPC (3.0$\times$10$\^$6/ CFU/ml) and the lowest absorbance (0.175) at the eighth day of storage.

Screening Method for Excessive Water Tolerance at Germinating Stage of Peanut (땅콩 발아기의 내습성 검정 방법)

  • Pae, Suk-Bok;Hwang, Chung-Dong;Lee, Myoung-Hee;Kim, Sung-Up;Oh, Ki-Won;Lee, Byung-Kyu;Baek, In-Youl
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.58 no.4
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    • pp.439-442
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    • 2013
  • This study was conducted to develop the testing method for excessive water tolerance at germinating stage and to screen 31 domestic peanut cultivars. Regardless of peanut grain scales, the amount of seed absorption nearly reached the peak in 10 hours after imbibition. When peanut seed in vermiculate soil was directly soaked in water, ability of emergence did not reduced until 16 days and then sharply reduce to 25 days with non-emergence. When seeds germinated for 1, 2, 3, and 4 days after seeding (DAS) were soaked, the emergence abilities were distinctively varied according to the sequent soaking days such as 1, 2, 3, 4, and 5 days. This explained the negative relationship between first germinating days (DAS) and following soaking days. Using the method of 2 day germinating and 3 day soaking that show less than 70% of emergence ability, 31 peanut cultivars were applied to test excessive water tolerance. Emergence rates varied 0% to 69% according to cultivar. Cultivar Daekwang, Sinkwang, Daecheong and Baekseon had over 50% emergence rates. These results suggested that the degree of water resistance in germinating stage may be important point to evaluate the excessive water resistance among cultivars.

Leakage of Seed Reserve Nutrient in Artificially Aged Pepper Seeds and Enhancement of Seed Vigor by Priming (노화처리된 고추종자의 저장성분 누출과 priming 처리가 종자활력 증진에 미치는 영향)

  • Kang Jum-Soon;Choi In-Soo
    • Journal of Life Science
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    • v.16 no.2 s.75
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    • pp.352-356
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    • 2006
  • Quantity of protein, amino acid, and sugar leaked from seeds was greater as the viability of seeds was dropped by the time elapsed of seed aging treatment. In the seeds with the artificial aging treatment for 20 days, 35.8 mg of protein was leaked on the 4th day after soaking, which was 6.9 times higher than that of control. Leakage of amino acid was also higher from low quality seeds treated with the aging treatment. In the seeds with the aging treatment for 20 days, $36.5{\mu}g$ fig of sugar was leaked on the 4th day after soaking, which was 2.8 times higher than that of control. The leakage of inorganic compound was higher from the low quality seeds, and leakage of total protein, amino acid, and sugar. According to .the quantity of leakage, water soluble compounds, which can be used for the assessment of seed quality without any destruction, were protein and potassium. Germination rate and percentage of seeds were dropped with the seed aging treatment, and the seed viability could be recovered by priming treatment. This phenomenon was very clear when the low quality seeds were germinated at low temperature.

Effect of Exogenous Metalaxyl Seed-Soaking on Root Initiation and Elongation of Young Rice Seedling (벼 어린모 뿌리의 분화 및 신장에 미치는 Metalaxyl의 종자침청처리 효과)

  • Kim, Je-Kyu;Park, Kwng-Ho;Lee, Moon-Hee;Oh, Yun-Jin
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.38 no.6
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    • pp.545-553
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    • 1993
  • The metalaxyl seed-soaking treatment markedly increased the root-mat formation of the young rice seedling(8- to l0-day-old) for machine transplanting. This experiment was conducted to find out a possible rooting mechanism of the young rice seedling in relation to the exogenous metalaxyl seed-soaking treatment. The rice seeds of Hwaseongbyeo variety were soaked in the solution of metalaxyl for 24 hours at room temperature. Metalaxyl(25% wettable powder), a fungicide, was used at the concentration of 200ppm as a promoting substance on the root-mat formation of the young rice seedling. Seeding rate of the young rice seedling was 220g per seed tray(30${\times}$60${\times}$depth 3cm). Metalaxyl seed treatment was highly effective in root initiation and elongation of the young rice seedling in terms of root activity, the number and length of root, and amino acid content of roots. The exogenous metalaxyl application would also increase the chlorophyll content and photosynthetic rate in the young rice seedling. Those factors resulted in vigorous root-mat formation of the young rice seedling. In particular, alanine is a lead compound of metalaxyl which biochemically plays an important role in energy intermediate of the rice plant. Alanine conjugation with a glucose (N-${\beta}$-glucoside) is probably the mechanism in enhancement of initiation and elongation of rice roots of young rice seedling.

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