• 한국수산과학회지
• /
• 제52권6호
• /
• pp.580-586
• /
• 2019

Fried-fish snacks containing surimi are a popular seafood product in Asia. To prepare fried-fish snacks, various ingredients are added to surimi. Among them, starch is important for producing snacks of desirable texture and taste. We investigated the physicochemical properties of fried-fish snacks containing arrowroot, potato, sweet potato, corn, and tapioca starches. The fried-fish snack with arrowroot starch showed the highest drying rate; after drying for 3 hours, the water content was unchanged. None of the starches affected the total volatile basic nitrogen values of the fried-fish snacks, which were approximately 1.5 mg/100 g, indicating freshness. The fried-fish snacks with corn and arrowroot starches had the highest brightness (L) values and the fried-fish snack with tapioca starch, the lowest L value. The hardness value of the fried-fish snack with tapioca starch was significantly higher than that of the other fried-fish snacks. In the sensory evaluation, the fried-fish snacks with arrowroot starch showed the best overall acceptance.

• 한국균학회지
• /
• 제42권4호
• /
• pp.328-332
• /
• 2014

Two-phase fermentation을 통한 Beauveria bassiana 149균주의 대량 배양을 위한 탄소원, 질소원, 기질 그리고 배양 조건 선발 실험을 실시하였다. 1차 액체 배양을 위한 적정 탄소원으로는 옥수수 분말, 전분 그리고 쌀가루가, 질소원으로는 펩톤과 효모 분발을 첨가한 것에서 포자 생산량이 높았다. 포자 대량 생산을 위한 기질 및 첨가물로는 톱밥+밀기울+옥수수 분말, 톱밥+밀기울, 쌀겨+밀기울 혼합에서 포자 생산량이 높았다. B. bassiana 149 균주의 포자 대량 생산을 위한 고체 배양 결과, 포자 생산량은 $30^{\circ}C$ 배양에서 $20^{\circ}C$보다 2배 정도 높은 경향을 보였다. B. bassiana 149 균주의 포자 생산량은 $25^{\circ}C$, 수분함량 60%와 70%에서 배양 시 $26.9{\times}10^8conidia/g$와 $38.6{\times}10^8conidia/g$로 40%와 50%의 $13.9{\times}10^8conidia/g$와 $11.6{\times}10^8conidia/g$ 보다 상당히 높았다.

• 한국토양비료학회지
• /
• 제6권1호
• /
• pp.29-31
• /
• 1973

Upon the assumption that the available components in the soil evaluated by present analytical procedures, are as effective as the components applied to the soil as fertilizer, some formulas for the calculation of fertilizer requirements (F. R) for crops are suggested. Basically, the formulas are derived by combining the country average values of soil test data(${\overline{ST}}$) and of the optimum rate of fertilizers (ORF) for crops obtained from N.P.K. trials in farmer's field, as following. $$F.R(kg/10a)={\overline{ST}}(kg/10a)+ORFkg/10a-ST(kg/10a)$$ where, ST denotes the available components tested in the soil under question. Although this formula can be used both for P and K fertilizers, considering the significance of the potassium saturation rate of the soil for the availability of K, for the calculation of K fertilizer requirement, following formula is suggested. $$F.R(kg/10a)=(C.E.C.{\times}B.S.R.K.-KST(me/100g){\times}CF$$ where, B. S. R. K. is the basic potassium saturation rate of the soil and CF is conversion factor for the conversion of K me/100g into $K_2O$ kg/10a. The B. S. R. K. for different crops are obtained from the country average values of soil exchangeable K (${\overline{KST}}$), cation exchange capacity (CEC) and the optimum rates of K fertilizers for crops (ORF $K_2O$). $$B.S.R.K.=\frac{{\overline{KST}}{\times}CF+ORF(K_2O)}{CEC{\times}CF}$$ Using these formulas, equations for P and K fertilizer requirements for rice, barley, wheat, corn, italian millet, soy bean, sweet potato, potato and rape are derived.

• Applied Biological Chemistry
• /
• 제27권3호
• /
• pp.198-203
• /
• 1984

열에 의한 호화전분을 사용하는 에탄올 발효공정에서 증자과정을 생략하기 위한 방법으로 알칼리호화 및 생전분으로 부터 직접 발효시키는 가능성을 여러가지 전분종류에 따라 검토하였다. 5.4% NaOH를 사용하여 전분을 호화시키고 $H_{2}SO_4$와 $KH_{2}PO_4$용액을 사용하여 중화시켰다. 이어상법에 따라 에탄올 발효를 시킨 결과 $CO_2$발생속도에 있어서는 화학적 호화방법에 비해 약간 떨어지나 최종 에탄올함량은 동일하였다. 한편 생전분에 당화효소와 효모를 첨가하고 동시 당화, 발효시켰을때 쌀의 생전분은 가열호화시킨 전분과 $CO_2$생성속도 및 최종 에탄올함량이 거의 비슷하였다. 옥수수, 보리, 타피오카 및 고구마등의 생전분은 초기의 $CO_2$생성속도가 늦었고 발효종료에 걸리는 시간은 길었으나 최종 에탄올함량은 종류에 따라 비슷하거나 약간 떨어졌다. 감자생전분은 분해, 발효시 초기의 $CO_2$발생속도와 발효율이 현저히 낮았다.

• 한국식품영양학회지
• /
• 제29권1호
• /
• pp.115-127
• /
• 2016

In this study, we compared diet related attributes such as food taste preference, food consumption frequency and nutrition intake between elderly residents in their 80's of areas in Jeollanam-do that are well known for longevity and those of a part of Seoul. Structured in-depth interviews were conducted by trained interviewers on 125 consented subjects (67 Jeonnam and 58 Seoul). Differences of groups were tested using Chi-square tests for nominal or ordinal data and t-tests and ANOVA tests for ratio data. The elderly from Jeonnam tended to sleep longer, express emotion more freely, and interact with others more often than those from Seoul. The elderly tended to prefer sweet or salty tastes, which might be highly related to serious health problems. The most frequently consumed foods were napa cabbage kimchi (2.19 times/day) and multigrain rice (1.99 times/day). Elderly from Jeonnam tended to consume garlic, milk, beans and roasted barley/corn teas less often; whereas, they consumed porridge, dried radish greens, potato, fermented fish, dried fish, pork rib, pork belly, soybean paste soup, soybean paste/Ssamjang, other kimchis, pickled vegetables, snacks, cookies, and green/black teas more often than elderly residents from Seoul. Differences in nutrition intake between the regions were greater than differences between the perceived levels of household economic status. NAR and INQ for folate were lower among elderly from Jeonnam than those from Seoul, while those for protein, vitamin C, niacin, vitamin $B_6$ were higher. The study results indicated that elderly from Jeonnam engaged in a more diverse diet than the elderly from Seoul.

• 농촌지도와개발
• /
• 제22권1호
• /
• pp.31-41
• /
• 2015

Rural tourism village experience is proceeded quantitatively without distinct characteristic. This research aimed at analyzing the experience and utilizing in the establishment of differentiation and contents development. Type of experience activity was classified as 10 types in Level 1 and 0~4 types in Level 2. As the result of analyzing 3,007 experiences in 168 villages, types of experience activity implemented per 1 village was 17.9. Among them, ecological experience type appeared to be the most, and appeared in order of food, agriculture farming experience. In respect of agriculture farming experience, 'harvest and utilization' was analyzed to be the highest, and regarding rural farmhouse living experience displayed 'farmhouse living' experience the highest. Tradition courtesy experience displayed 'traditional culture' experience the highest, and rural food experience was analyzed to implement 'food making' experience the most. Ecological experience mainly consisted of 'hunting and collecting' and 'observation/learning', in case of play experience, 'traditional play' experience activity was analyzed to be performed the most. Considering utilization material, it appeared in order of 'rice', 'sweet potato', 'potato', 'corn', 'chili', 'agricultural implement', 'farmhouse', 'animal', 'culture', 'history', 'rice cake', 'alcoholic drink', 'tofu', 'kimchi', etc. The place of ecological experience was performed in the forest the most, and lots of experience was performed in stream, valley, and river. The researcher expects that characteristic experience activity will be developed based on this result, by avoiding doubleness of the experience activity among the regions and the villages.

• 한국미생물·생명공학회지
• /
• 제18권3호
• /
• pp.251-259
• /
• 1990

생전분 분해력이 강력한 glucoamylase를 생산하는 균주로서 Asp.usamii IAM 2185를 선정하였다. 밀기울배지에서의 효소생산의 최적 initial pH는 6.0-8.0, 최적 배양온도는 25-$30^{\circ}C$, 최적 배양시간은 72시간이고, 밀기울배지에 ammonuim nitrate와 albumin의 첨가는 효소의 생산을 약간 증가시켰다. 황산암모늄분획, CM-cellulose와 DEAE-cellulose column chromatography에 의하여 효소를 정제하였고, 정제효소의 specific activity는 34.3U/mg.protein, 수율은 10.3 이었다.

• 한국미생물·생명공학회지
• /
• 제13권4호
• /
• pp.329-337
• /
• 1985

토양등으로부터 생전분 분해효소 생산능이 있는 409주의 곰팡이와 62주의 세균 및 2주의 방선균을 분리하고 이들 중에서 7-BU 균주를 선정하여 동정하고 밀기울을 기본배지로 한 효소 생산조건 및 생전분을 이용한 알코올 발효 실험 등을 실시하여 다음과 같은 결과를 얻었다. 1. 생전분 분해효소 생산능이 강하다고 인정된 7-BU 균주는 Rhizopus oryzae로 동정되었다 2. 7-BU 균주의 효소생산 최적온도는 3$0^{\circ}C$이고 pH는 4.0이었으며 배양 72시간 후에 최고의 역가를 보였고 밀기울 배지에 옥수수전분을 0.5% 첨가하였을 때 효소생산이 더욱 촉진되었다. 3. 조효소액에 의한 각종 생전분의 가수분해율은 반응 4일에 쌀전분 89.2%, 옥수수전분 85%, 고구마전분 82%, 감자전분 36%이었고 쌀가루는 86%, 옥수수가루 81%. 고구마가루 79%, 감자가루 30%이었다. 4. 옥수수가루, 쌀가루, 고구마가루와 감자가루를 원료로 하여 조효소액과 효모를 첨가한 후 알코올 발효 실험을 한 결과 담금 4일 후 쌀가루구 9.4%, 옥수수가루구 9.0%, 고구마가루구 8. 1%, 감자가루구 5.4%의 에탄을 생성을 보였다.

• 한국토양비료학회지
• /
• 제46권2호
• /
• pp.81-86
• /
• 2013

For organic farming, green manure crops such as leguminous forages and barley have been broadly used to improve soil fertility and soil physical and chemical properties by repeatedly cutting and mulching them directly as winter crop in the field in the rotation. In this investigation we selected 78 agricultural farm corporations as well as individual organic farmhouses related to crop rotation from greenmanure crops to main crops in order to analyze the relationship of cropping system between main crops and green manure crops. The results showed that the green manure crops were divided into two groups as leguminous and nonleguminous crops, representing that those are limited to specific climate and farming systems of regions. Also the 10 or less green manure crops including sudangrass, hairyvetch, italian ryegrass, sorghun, buckwheat, oat, pea, rye, clover, and canola which belong to leguminous crops which are presently cultivated from the organic farmhouses within the rotational crop system. We also confirmed that the major main crops are sweet potato, soybean, corn, tobacco, spinach from usage frequency analyzed by NetMiner H 2.6 which was used to estimate the rotational cropping system among the green manure crops and main crops.

• 한국농공학회논문집
• /
• 제61권1호
• /
• pp.121-130
• /
• 2019

The purpose of this study is to determine the amount of irrigation water for upland crop growth based on the 30 year of historical rainfall data and the water management guidelines as a reference. Five regions and ten crops were selected by their cultivation size. The changes of soil moisture contents were calculated using daily mean rainfall and irrigation demand. This study assumed that crops are irrigated when the soil moisture contents fell below of the field capacity for more than 5 days, which is the drought condition defined by RDA. The maximum irrigation water requirements was 167.2 mm for chinese cabbage during the growing season, which was followed by corn (112.0 mm), daikon (102.3 mm), spinach (66.1 mm), lettuce (56.7 mm), pepper (46.5 mm), potato (33.9 mm), sweet tomato (27.4 mm), peanut (11.5 mm) and bean (10.3 mm), The results of this study could contribute to providing valuable data to determine the capacity of irrigation facilities and to establish the emergency operation plans under extreme unfavorable weather condition (heat wave, etc.) for crop growth.