• Korean Journal of Food Science and Technology
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• v.29 no.3
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• pp.470-475
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• 1997

This study was to determine the effects of rice varities on saccharification in producing sikhe using 45 different rice varities. Using Gancheok, Sinkeumo, Seoan and Gyehwa, sikhe showed the highest sweetness determined by refractometer, however sikhe using Sangiu, Namweon and Yeongdeog showed the lowest sweetness with difference of about 19%. Sugar composition of sikhe using Gancheok, rice variety, is fructose 3.6%, glucose 9.8%, maltose 78.3% and maltotriose 8.3%, analysed by High Performance Liquid Chromatography. Six-row malt showed better saccharification power than two-row malt. And 100 mesh sieved powder of malt was better in saccharification than 20 mesh sieved powder. Optimum saccharification temperature of six-row malt was $60^{\circ}C$.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.15
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• pp.115-121
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• 1974

Artificial induction of nitrogen deficiency symptoms (leaf chlorosis) with two root respiratory inhibitors(DNP and Na$_2$S) was studied and regarded to be the same characteristic to red discoloration in rice var. Tongil seedling leaves as well as adult ones. Tongil(IR 667) was shown to be more nitrogen sensitive and have more distinctive appearance of the leaf discoloration than Punggwang(a native Japonica-type varity.) Conclusions were drawn from the present data that so-called red discoloration of Tongil under the natural field conditions is brought about either by insufficient nitrogen supply in soils or certain factors which may limit at any time the root absorption of nitrogen (low temperature, toxic gases or substances, poor drainage, around roots, etc.) in soils even with ample supply of it.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.28 no.3
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• pp.291-298
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• 1983

The effects of various factors affacting yield and its components in rice were estimated by analzing the yield forcasting trial data from 1966 to 1979. The results obtained are as follows: 1. The year effects was increased by 3.46kg per year, and one day early planting increased by 2,26kg. 2. The effect of japonica vareties was negative while that of indica-japonica hybrid varieties was positive and the effect of each varities was increased by 3.46kg per year. 3. The contribution of each effect of the planting date, nitrogen varity, pest control and other improvement of cultivation to yield was estimated as 1.76kg (14.5%), I.04kg (8.7%), 5.84kg(48.2%), 3.47kg(28.6%) per year, respectively.

• Journal of the Korean Society of Food Culture
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• v.9 no.5
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• pp.509-524
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• 1995

Consumer's perceptions of the quality of food and food-related servcie were surveyed through questionnaires by 672 adults randomly selected from 20 industrial foodservice in Pusan Kyeung Nam area. Data from consumers were analyzed by using $SPSSPC^+$ program in terms of $x^2-test$, oneway ANOVA, t-test. The results are as follows: 1) Among the food characteristics, the mean rating for temperature of food was 3.18 over 5, for quality of food vs. food price 2.97, for fresshness 2.96, for taste 2.86, and for combination of colors 2.73; 2) In the food-related service, the mean rating was 3.20 for cleanliness of dishes, 3.18 for quality of dishes, 3.01 for varity of food items, 2.95 for courtesy of employees, and 2.57 for availability of favorite food. 3) Self-operated foodservice showed higher mean ratings in nutrition of food, quality of food vs. food price, and availability of favorite food than does the contracted one. 4) The rice (85.0%) and the kimchi (81.4%) were right in amount, but the soup (42.5%) and the side dish (49.0%) were not enough. 5) In seasoning of food, 45.2% of the respondents agreed that the salty taste and the amount of MSG were just right. However, 38.0% and 37.9% of them responded that the salty tast was strong and the amount of MSG was much. 6) The respondents mostly required the improvement of the taste of side dish, nutrition of food, sanitation of food, and variety of menu items.

• Korean Journal of Soil Science and Fertilizer
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• v.9 no.1
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• pp.47-55
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• 1976

This study is conducted to find out potential evapotranspiration values computed by a reasonable formula which is well suited among the existing ones for Suweon area. Each formula based on the data from Suweon Agricultural Meteorological Station during 1964 to 1973. Five formulas which are Blanney-Criddle, Thornthwaite, Penman, Jensen-Haise and Truc have been applied for calculation of potential evapotanspiration. Results obtained are summarized as follows. 1. Potential evapotranspiration of Suweon area shows uni-modal distribution which maximum value occurs in summer and minimum value occurs in winter. Annual potential evapotranspiration computed by Blanney-Criddle formula is 1,377 mm and that computed by others ranges from 714mm to 896mm. 2. Potential evapotranspiration computed by Blanney-Criddle formula is higher value than that computed by others, and among the other formulas it's values show little differences. However, relationships between the former and the mean of four others is highly correlated. 3. In comparison with potential evapotranspiration computed by formulas and actual evapotranspiration for rice paddy which is already reported, value for crop coefficient may be 0.8 in local varities, 1.0 in Tongil varity on Blanney-Criddle formula, and 1.2 in local varities and 1.5 in Tongil varity on the mean of four other fomulas. 4. Five formulas may applied for calculation of potential evapotranspiration because of relatively good correlation among them. However Blanney-Criddle formula is one of recommendable ones, because it is easy to compute and requires less data in compare with other formulas.