• Journal of Food Hygiene and Safety
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• v.37 no.6
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• pp.418-428
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• 2022

The purpose of this study was to obtain the codex classification information on the primary food commodity (fresh state) of processed foods of plant origin that are included in the Codex Classification of Foods and Animal Feeds. Furthermore, whether or not the primary food commodity is included in the primary food classification from the Food Code of Korea was investigated. The results are summarized as follows: First, the Codex Classification information (number of classification codes/number of the primary food commodity group that fresh commodities of processed foods are classified/number of primary food commodity that is not included in the Codex Classification) by a processed food group appeared to be 46/8/0 for dried fruits, 76/11/1 for dried vegetables, 54/4/12 for dried herbs, 36/1/0 for cereal grain milling fractions, 17/4/3 for oils and fats (crude), 34/8/9 for oils and fats (refined), 20/8/0 for fruit juices, 3/2/0 for vegetable juices, and 19 codes for teas (in the Codex Classification, the primary food commodity group for tea does not exist). Second, the number of the primary food commodities not included in the Food Code of Korea was 9 for dried fruits, 14 for dried vegetables, 35 for dried herbs, 0 for cereal grain milling fractions, 6 for teas, 3 for oils and fats (crude), 9 for oils and fats (refined), 2 for fruit juices, and 0 for vegetable juices. Third, it was demonstrated that caution should be exercised when using Codex Classification due to differences in food classification between Codex and Korea, such as coconut (Codex, as tree nut as well as assorted tropical and sub-tropical fruit) and olive (Codex, as assorted tropical and sub-tropical fruit as well as olives for oil production), as well as special cases in the Codex Classification, such as dried chili pepper (Codex, as spice), tomato juice (Codex, as vegetable for primary food commodity and as fruit juice for juice) and ginger (Codex, as spice for rhizome and not including as primary commodity for leaves).

• Journal of Nutrition and Health
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• v.30 no.8
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• pp.952-959
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• 1997

Korean intakes of Vitamin A have not reached RDA for a long time according to the National Nutrition Survey. The pupose of this study was to examine the serum response to short-term carotenoids-rich vegetable juices supplementation. A total of 31 female students were recruited for this study. Their average serum retinol content before supplementation began was 14.74$\mu\textrm{g}$/100ml, and 87% of them had lower than adequate levels. Serum $\beta$-carotene, $\alpha$-carotene, lycopene and lutein contents were 0.77, -, 0.74 and 8.29$\mu\textrm{g}$/100$m\ell$ respectively. The serum responses to 3 kinds of juice supplementation for 3 weeks are summarized as follows. A small but steady increase in serum retinol concentration was detected with the supplementation (p<.05), but the kinds of juice made no significant difference. Serum $\beta$-carotene contents also increased with the supplementation(p<.01), but the kinds of juice again made no significant difference. Serum lycopene increased with the lycopene-containing vegetable juice and tomato juice supplementation, but the increase wasn't significant. There was no change in serum lycopene levels with the lycopene free carrot juice supplementation. Finally, there were no signifnicant changes in serum lutein and $\alpha$-carotene levels with the 3 kinds of juice supplementation.

• Journal of the Korean Society of Food Science and Nutrition
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• v.28 no.2
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• pp.342-347
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• 1999

The objectives of this study were to investigate biological activities such as nitrite scavenging effect of water and methanol fractions obtained from each green juice(Angelica keiskei, kale, carrot) under different pH conditions, and antioxidant vitamin contents in green juice made of green yellow vegetables. The result shows that nitrite scavenging effect of each green juice was 14.0~91.2% in model system. The methanol fraction provided higher effect than the water fraction. The nitrite degradation was the highest at pH 1.2. Nitrite scavenging effect of methanol fraction obtained from kale juice was 91.2% at pH 1.2 which was the highest among tested samples in this experiments. Consequently, extracts of kale juice were shown to provide the greatest functional properties among the vegetables tested. Contents of vitamine E and C in the extracts of kale were higher than the others.

• Korean Journal of Community Nutrition
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• v.8 no.5
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• pp.675-688
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• 2003

The aim of this study was to investigate the dietary habits and the factors related to lifestyles in female college students with constipation. A survey was conducted using a self-administered questionnaires. Two hundred ninety one subjects participated in this study. All respondents were divided into three groups based on their frequency of stool evacuation: 129 subjects (44.3%) comprised the normal group, 109 (37.5%) the mild constipated group and 53 (18.2%) the severely constipated group. Abdominal pain and ailment during evacuation were higher and the feeling of relief after evacuation was lower in the normal group than in the two constipated groups. The greater the symptoms of constipation, the more laxatives were taken. The prevalence of constipation was lower in students who lived at home than in those who lived in other types of residences. The more pocket money the subject had, the more complaints they had about constipation symptoms. Forty three percent of the subjects ate meals regularly. The less frequently they ate meals and the greater the rate of skipping breakfasts and dining-out, the greater were their constipation symptoms. Rice and most of the food items in the vegetable food group were consumed less frequently in the two constipated groups than in the normal group. The severely constipated group ate food items in the fat group less frequently than the normal and mildly constipated groups. The beverage intake of the normal group tended to be lower than those of the two constipated groups; the constipated groups consumed fruits and vegetable juices less frequently and coffee and tea more frequently. The severely constipated group ate the least number of food items in the vegetable & fruit and fat food groups. Therefore, dietary habits and factors related to lifestyles should be changed through nutrition education programs aimed at improving the symptoms of constipation in young women.

• The Korean Journal of Food And Nutrition
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• v.30 no.3
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• pp.568-577
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• 2017

Vegetables and fruits contain a great deal of vitamins, minerals, dietary fiber and phytochemicals. Therefore, healthconcious consumer prefer beverage made from fresh fruits and vegetables due to their health benefits. This study was conducted to investigate differences in nutritional composition and sensory characteristics of juices depending on the apparatus used: either a low-speed juicer or high-speed blender. All ingredients could be made into juice without addition of water using the low speed juicer. However, addition of water was necessary to produce juice with the high-speed blender. Phenol and flavonoid content, were higher in juice made with the low-speed juicer than that produced with the high-speed blender and were correlated with DPPH radical scavenging ability. Protease activity of pineapples juices was not significantly different for the two methods, but protease activity of kiwi juice was about 8 times higher in juice made with low-speed juicer than that made with the high-speed blender. SOD activity also tended to be higher in the juice made with low-speed juicer. The concentration of dissolved oxygen in the juice made with high-speed blender was higher than that of juice made with a low-speed juicer and was correlated with color change. In addition, the high-speed blender caused an increase juice temperature, but temperature was not changed during use of the low-speed juicer. The noise level of the low-speed juicer was low, but the high-speed blender had high noise intensity comparable to that of railway or aircraft noise. In the sensory evaluation of juice, juice made with the low-speed juicer was preferred over juice made with the high-speed blender. As a result, the overall quality of the juice produced using the low-speed juicer was superior.

• Journal of Food Hygiene and Safety
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• v.15 no.2
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• pp.88-94
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• 2000

The purpose of this presents is to investigate, using natural food extracts(Green tea; Camellia sinesis, Du'chung; Eucommia ulmoides Oliver, Eu sung cho; Houttuynia cordate Thunb, Sam back cho; Saurus Chinensis, Baek hwa sa seal oho; Oldenladia diffusa Roxb., Laver; Porphyra tenera, Sea mustard; Undaria pinnatifda and Sea staghorn; Condium fragile) and juices(Sweet pepper; Capsicum annuum var. angulosum, Kale; Brassia oleracea var. acephala, Cucumber; Cucumis sativus, Onion; Allium cepa, Tomato; Lycopericon esculentum, Maesil; Prunus mume, Plum; Prunus salicina and Grape; Vitis spp.), the effect of natural plant components on the nitrite-scavenging under the different levels of pH. From the above mentioned extracts and juices, the content of vitamin C was detected, containing 65.1∼77.1 mg/100g, at the highest level in the Green tea, and followed by vegetables and fruits in order. The nitrite scavenging effect of teas, medicinal plants, and seaweed extracts, in the reaction system under the condition of pH 1.2, were 57.0∼100%, 50.0∼100%, and 18.0∼99.0%, respectively. Especially, the nitrite was scavenged to the level of 100%1 when 10 ml of kale and 5 ml of maesil Juice

• Korean Journal of Food Science and Technology
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• v.27 no.1
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• pp.74-79
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• 1995

Autoclaved juices of common vegetables including cabbage were growth inhibitory to various microorganisms. Sensitivity of microorganisms to antimicrobial action of autoclaved vegetable juices was different depending on microbial strains. Lactic acid bacteria and Gram negative bacteria were less sensitive while non-lactic Gram positive bacteria and yeasts were very much sensitive to antimicrobial action of autoclaved cabbage juice(ACJ). Staphylococcus aureus and Candida utilis whose growth were completely inhibited in ACJ could grow in ACJ diluted with distilled water. This suggests that microorganisms were not able to grow in ACJ because of growth inhibitory compounds produced during heating but not because of the lack of nutrients. Cabbage juice heated at $100^{\circ}C$ for up to 30 min was not inhibitory while that heated at $121^{\circ}C$ for 5 min was. Heating temperature was an important parameter in generating growth inhibitory compound in heated cabbage juice.

• Journal of the Korea Convergence Society
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• v.12 no.12
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• pp.153-159
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• 2021

The purpose of this study is to determine the demage of tooth surface changes according to exposure time of commercially available green grape juice and pomegranate juice. Extracted healthy human premolar enamel surfaces were used. Control group immersed in phosphate-buffered saline (PBS) and 10 ml of commercially available green grape juice and pomegranate juice applied experimental group was divided into 7 groups. The pH of the experimental juice was measured, and the change and micrographics of the surface were confirmed through a Scanning Electron Microscope (SEM). It was found that the more the immersion time between the tooth surface and acid juice, such as damage to the tooth surface, has a greater effect on the surface damage. Based on the results of this study, it is necessary to reduce the number of drinking times and retention time in the oral cavity.

• Korean Journal of Food Science and Technology
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• v.31 no.4
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• pp.880-886
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• 1999

The present study was attempted to investigate the contents of antioxidant nutrients in green juice of Angelica keiskei, kale, carrot, celery, cucumber. All 5 green juice were found to contain antioxidant nutrients such as ${\beta}-carotene$, vitamin E, vitamin C, Se, Cu, Mn, Zn and phenols. ${\beta}-carotene$ contents of carrot, kale, Angelica keiskei, celery and cucumber juice were 5909.0, 3285.3, 1398.4, 176.7 and 61.4 mg/l00 g, respectively. ${\alpha}-tocopherol$ contents of 5 green juices were $0.04{\sim}1.41$ mg/l00 g. Kale juice had highest ${\alpha}-tocopherol$ and celery juice contained lowest, kale juice also contained highest vitamin C (105.1 mg/l00 g) and Angelica keiskei, cucumber, celery and carrot had vitamin C contents of 31.4, 9.3, 7.5 and 5.2 mg/l00 g, respectively. Angelica keiskei had highest amount of antioxidant minerals among the sample such as Cu (0.40 mg/l00 g), Mn (0.5 mg/l00 g), Zn (0.24 mg/l00 g), Se $(0.61\;{\mu}g/kg)$. Kale was the second best source of antioxidant minerals which were Cu (0.45 mg/l00 g), Mn (0.22 mg/l00 g), Zn (0.24 mg/l00 g), Se $(0.33\;{\mu}g/kg)$. However, celery and cucumber were poor in antioxidant minerals. Total phenolic contents of 5 green juices were $0.01\;{\sim}0.05%$, kale juice also had highest total phenolics among the samples.

• Korean Journal of Food Science and Technology
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• v.30 no.1
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• pp.90-96
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• 1998

An experiment to make mixed juices carrying the freshness and other specific characteristics of vegetables and fruits which are useful for the prevention and treatment of various diseases was attempted on the emphases of pretreatment methods, combination of fruits and vegetables, and elimination of microorganisms. Blanch in boiling water prior to extraction for green vegetables, addition of ascorbic acid during extraction for tomatoes and apples, or addition of ascorbic acid after blanch in 3% acetic acid for carrots was effective to keep colors and suspended solids in liquid extract. On the basis of sensory evaluation the extracts from tomatoes, apples. carrots. mallows, watercreses+pine needles, Angelica keiskei Koiz, jujubes and lemons were selected and mixed at the ratio of 3 : 3 : 3 : 1/2 : 1/2 : 1/2 : 1/2 : 1/5. The mixed extracts were pasteurized for 15sec at $96^{\circ}C$ or filtered through a ultramembrane filter. While the centrifuge precipitation and retentates on the membrane filter were autoclaved and combined with ultrafiltrates. The mixed juices showed $pH\;4.07{\sim}4.10$ titratable acidity $66.35{\sim}84.08$, soluble solid $7{\sim}9^0Brix$, reducing sugar $5.42{\sim}6.97%$, glucose $1.96{\sim}2.30%$, fructose $3.46{\sim}4.14%$ and high content of K, Mg and Ca. Ultrafiltration showed better quality scores in color, juice. Peroxidase and microorganisms were inactivated by thermal treatment and ultrafiltration.