• Journal of the Korean Society of Food Science and Nutrition
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• v.31 no.1
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• pp.45-49
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• 2002

This study was conducted to enhance the value of chamnamul (Pimpinella brachycarpa (Komarov) $N_{AKAI}$) as an useful food resource. Hunter L, a, b values (lightness, redness, yellowness) of chamnamul leaf were 33.28$\pm$1.94, -10.98$\pm$0.74, 14.05$\pm$1.29 and shearing force was 2745.2g. Contents of tannin and dietary fiber were 100.9 mg%, 24.0% (freeze drying base). The minerals identified in chamnamul were Ca 7.85 g/kg, K 76.31 g/kg, Mg 4.78g/kg, Fe 0.35g/kg, Na 2.35 g/kg. Chamnamul kimchi was packed in polyethylene film (200g) and fermented at 2$0^{\circ}C$ and 4$^{\circ}C$. In color changes kimchi fermented at 2$0^{\circ}C$ showed more increase in Hunter L, a, b values than kimchi fermented at 4$^{\circ}C$. The pH of kimchi decreased and acidity increased with storage time at both temperature. Ascorbic acid contents decreased sharply with storage time. Loss of ascorbic acid contents was about 81.9% in kimchi fermented at 2$0^{\circ}C$ after 5 days, and kimchi fermented 4$^{\circ}C$ lost 77.3% of ascorbic acid after 30 days. Also reducing sugar contents decreased with storage time at 2$0^{\circ}C$ and 4$^{\circ}C$. The results of sensory evaluation showed that optimum ripening time of chamnamul kimchi was 1~3 days at 2$0^{\circ}C$ and more than 20 days at 4$^{\circ}C$.>.

• Korean Journal of Food Science and Technology
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• v.23 no.6
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• pp.723-731
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• 1991

In order to optimize sterilization conditions of retort pouched curry sauce, sterilization processes for eighteen conditions by varying temperature, time and method were conducted through $3^{2}{\times}2^{1}$ experimental factorial design. Quality evaluations before and after sterilization included measurements of vitamin (niacin) retention, pH and color differences, and organoleptic test(taste, color and viscosity). $F_{o}$ values were also measured at each condition. Product qualities were mainly affected by sterilization temperature and time, whereas sterilization method had no significant effect. Effect of sterilization time on product qualities was higher than that of sterilization temperature. From the response surface analysis, an optimum range of sterilization condition simultaneously satisfying desired specifications was determined to be $123.5^{\circ}C$, 21.5 min to $127.5^{\circ}C$, 17.0 min. In this range, the sterility($F_{o}$ value) at a cold point during sterilization was approximately 15.0 min.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.48 no.4
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• pp.454-458
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• 2015

This study compared the effects of dietary supplementation of citrus by-product (CBP) and CBP fermented with Bacillus subtilis (F-CBP) on growth performance, feed utilization, intestinal histology and innate immunity of red seabream Pagrus major with three commercial immune-boosting products. The six experimental diets were supplemented with L-ascorbyl-2-polyphosphate (LAPP; the control diet), CBP or F-CBP at a concentration of 100 mg vitamin C equivalent/kg diet or one of three commercial immune boosters. The Experimental diets were fed to triplicate groups of 17 fish (initial body weight, 116 g) for 8 weeks. The water temperature during the feeding trial was maintained at $13-15^{\circ}C$. Growth and feed utilization did not differ significantly among the six dietary treatments, nor did the phagocytic activity, superoxide dismutase or total immunoglobulin concentrations. However, myeloperoxidase activity was significantly higher in the CBP groups. For the intestinal histology, the intestine diameter, villi and enterocyte heights and number of goblet cells did not differ significantly among groups. Therefore, CBP or F-CBP can be used as a valuable eco-friendly byproduct in diets for fishes including red seabream to maintain their normal growth and health.

• Proceedings of the Korean Society of Postharvest Science and Technology of Agricultural Products Conference
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• 2003.04a
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• pp.125.2-126
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• 2003

손바닥 선인장(Opuntia ficus indica var. saboten)은 열대지역 유래의 다년초로서 열매와 줄기를 공복에 갈아 마시면 변비치료, 이뇨효과, 장운동의 활성화 및 식욕증진에 효능이 있으며, 선인장 줄기는 오래전부터 피부질환, 류머티스 및 화상치료에 이용되어 왔다 선인장 열매(prickly pear pulp)는 14.5%의 고형분 함량을 가지고 있으며, 0.21%의 단백질, 0.12%의 지방, 0.44%의 회분, 0.19%의 pectin 이외에 미량의 비타민 A와 C 그리고 여러 종류의 무기질을 포함하고 있다. 선인장 열매로부터 분리된 pectin 성분은 콜레스테롤 수치를 낮추는 효과가 있다고 보고된 바 있다. 본 연구에서는 손바닥 선인장의 소비 확대 방안의 일환으로 손바닥 선인장 열매를 이용한 겔타입 파우치 제품의 개발을 위한 최적의 제조조건을 확립하고자 하였다. 이를 위하여 손바닥 선인장 열매의 추출특성을 반응표면분석에 의해 모니터링하고, 최적조건에서 얻은 추출물을 이용하여 제조한 파우치 제품의 관능적 특성을 검토하였다. 그 결과 가용성 고형분 함량은 추출온도 82.7$0^{\circ}C$, 추출시간 118.98min 및 용매비 24.91 $m\ell$/g일 때 최대값을 나타내었으며, 총페놀성화합물 함량의 최대값은 578.96 $\mu\textrm{g}$/$m\ell$으로 추출온도 89.37$^{\circ}C$, 추출시간 144.77 min 및 용매비 22.81 $m\ell$/g일 때였다. 전자공여능은 추출 온도 97.26$^{\circ}C$, 추출시간 109.30 min, 용매비 19.73 $m\ell$/g일 때 최대값을 나타내었다. 손바닥 선인장 열매의 겔타입 파우치에 대한 관능검사 결과, 최대의 관능점수를 나타내는 배합비는 전반적인 기호도가 3.75점으로 xanthan gum의 함량이 0.11%, 당의 함량이 6.59%, 사과식초의 함량이 1.34%인 것으로 나타났다.

• Journal of the Korean Society of Food Science and Nutrition
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• v.38 no.1
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• pp.98-104
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• 2009

The objective of this study was to characterize quality changes of PET-packaged green tea beverage during 4-week storage at $60^{\circ}C$. Changes in oxygen transmission of the PET bottle package and cap removal torque were also examined. MXD6 blend PET bottle showed stability in the gas barrier. Its cap removal torque was kept stable during the 4 weeks. pH, color value, contents of vitamin C and catechin showed significant changes during the storage while caffeine and amino acid did not change significantly. Four alcohol flavor components (hexanol, linalool, menthol, and ${\alpha}$-terpineol) increased rapidly during the first three weeks while d-limonene did not show significant change. Sensory test showed decrease in astringent flavor lowering the product flavor and acceptability.

• Food Science and Preservation
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• v.8 no.1
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• pp.9-15
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• 2001

The effects of water soaking and gamma irradiation on the storage quality of chestnuts (Castanea crenata) were investigated. Chestnuts weirs soaked in water for 48 hrs at room temperature, irradiated at 0, 0.15, 0.25 and 0.35 kGy of $\^$60/Co gamma ray, and then stored at 0$\^{C}$ and 95$\pm$2% RH for 9 months. Spouting was observed at the end of storage only in chestnuts that were soaked and irradiated at below 0.25 kGy. Rotting was found from the early stage of storage in all pre-treatment conditions, but the rotting rate of soaked chestnuts was higher twice than unsoaked ones after 9 months of storage. Weight loss was lower in soaked than unseated samples regardless of irradiation dose. Loss of flesh firmness was appreciably retarded as irradiation dose increased. Total sugar content decreased slowly in irradiated samples at the later periods of storage. Gamma irradiation resulted in the decrease of vitamin C content immediately after treatment, but retarded its loss rate during storage. Soluble tannin content was not affected by gamma irradiation at scout inhibition doses.

• Journal of the Korean Wood Science and Technology
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• v.39 no.6
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• pp.490-497
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• 2011

In this study, we determined optimal conditions for simultaneous saccharification and fermentation (SSF) using corncob biomass pretreated with oxalic acid. The effect of SSF temperature ($25.8{\sim}34.2^{\circ}C$) and agitation speed (80~220 rpm) were significant at a 99% confidence level in its effect on ethanol production. The highest ethanol production was expected when SSF was performed at $30^{\circ}C$, 170 rpm (22.5 g/L). The ethanol production was improved by mixture of yeast extract (1.25 g/L) and urea (1.25 g/L) as nitrogen source. However, addition of trace metal components and vitamin for SSF was not affected in the ethanol production. Optimal concentration of $KH_2PO_4$, $MgSO_4{\cdot}7H_2O$ for SSF was 1 g/L, 0.25 g/L respectively.

• Journal of Nutrition and Health
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• v.34 no.3
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• pp.330-337
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• 2001

The purpose of this study was to investigate the nutritional status of antioxidant vitamins in relation to serum malondialdehye(MDA) level in postmenopausal women with common occurance of cardiovascular disease(CVD). Data about general characteristics including smoking, drinking and exercise status, dietary intake and serum level of antioxidant vitamins, and serum MDA level were collected from eighty-five postmenopausal women. Mean serum MDA level was 1.62$\pm$0.03nmol/ml, and general characteristics and serum lipid profiles were not significantly different among the three group: low MDA(<1.45nmol/ml), midium MDA(1.45-1.74nmol/ml) and high MDA($\geq$1.74nmol/ml). Total mean vitamin A intake was 472.8$\pm$37.7RE, 68% of RDA, vitamin C intake was 134.3$\pm$8.7mg, 192% of RDA and vitamin E intake was 8.6$\pm$0.5mg, 86% of RDA for Korean. In takes of antioxidant vitamins from the diet were not significantly different among the three groups. However significant negative correlation(r=-0.242, p<0.05) was observed between vitamin E intake and serum MDA level in total subjects. Total mean serum vitamin A, $\beta$-carotene and vitamin C level were 0.59$\pm$0.01$\mu\textrm{g}$/ml, 0.25$\pm$0.01$\mu\textrm{g}$/ml and 9.02$\pm$0.28$\mu\textrm{g}$/ml, respectively. Total mean serum vitamin E and vitamin E/total cholesterol level were 9.15$\pm$0.42$\mu\textrm{g}$/ml and 4.09$\pm$0.17$\mu\textrm{g}$/mg, respectively. Serum antioxidant vitamins levels were not significantly different among the three groups. However serum vitamin C and E level were negatively correlated to serum MDA level. We can conclude that it will be helpful for postmenopausal women with common occurance of CVD to improve nutritional status of antioxidant vitamins by increasing intakes of antioxidant vitamins, especially vitamin C and E. (Korean J Nutrition 34(3) : 330~337, 2001)

• Korean Journal of Food Science and Technology
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• v.34 no.5
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• pp.757-761
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• 2002

Proximate composition, phenolic compounds, and amino acid composition of molokhia (Corchorus olitorius) and molecular weight distribution of its mucilage were determined. Concentrations of dietary fibers and protein were 37.4 and 24.4% of the total dry weight, respectively. Mucilage was obtained by extracting dry molokhia leaves with hot water, followed by the addition of 55% ethanol. Although about 50% of the mucilage was lost during the extration, it was still rich in polyphenol compounds. In mucilage, proteins were composed of glutamic acid, glycine, alanin, and aspartic acid, and molecular weight of most polysaccarides ranged from $40,000{\sim}500,000$ daltons based on gel filtration chromatography.

• YAKHAK HOEJI
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• v.40 no.3
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• pp.243-250
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• 1996

In order to formulate aqueous multivitamin solutions containing both oil-soluble (A, D, E) and water-soluble vitmains ($B_1,\;B_2,\;B_6,\;B_{12}$, C and niacinamide) in 1ml-dose, the effects of various additives such as cosolvents (propylene glycol, polyethylene glycol, glycerin), a sweetener (sorbitol) and a surfactant (Cremophor$^{\circledR}$ RH40) on the solubility of oil-soluble vitamins in water were evaluated. Cremophor$^{\circledR}$ RH40 showed the excellent capacity on the solubilization of oil-soluble vitamins, and the simultaneous addition of cosolvents and surfactant resulted in synergetic effects on the solubilization of oil-soluble vitamins. The effects of the combination of the cosolvents and sweetener on the stability of multivitamin solutions were also evaluated by determining the amount of vitmain A and $B_1$ remained in the solutions after storing at $40^{\circ}C$ for 9 weeks. The formulation consisting of Cremophor$^{\circledR}$ RH40 15%, PG 20%, and sorbitol 20% resulted in the best stability of vitamin A and $B_1$. The stability of vitamin A and $B_1$ in this formulation was evaluated at 50, 60, and $70^{\circ}C$ up to 40 days. The shelf-lives of vitamin A and $B_1$ in the formulation, calculated using the Arrhenius equation, were 1,521 days and 475 days at $20^{\circ}C$, respectively.