Commercially produced 'baby leaves' of Brassica campestris var. narinosa (Chinese cabbage) were used in the present study. Baby leaf vegetables were sown on 128 cell plug trays and harvested 30 days after sowing. For mechanical stress experiments, seedlings were thinned to three per cell, selected for uniformity, and watered at the base. Trays were treated with mechanical stress by stroking back and forth 50 times, using a sheet of A4 paper folded to double thickness. Plants were treated between 12:00 and 14:00 daily for 15-20 days. Harvested baby leaf vegetables were packed in MAP salad bags made of P-plus film, $50{\mu}m$ polypropylene (PP) film, and polyethylene terephthalate (PET) boxes. Fresh weight was well-maintained under P-plus and PP film on storage at $8^{\circ}C$. However, loss of fresh weight occurred quickly in PET boxes, and vegetable quality deteriorated rapidly. Stressed leaves were smaller but thicker, with an increased dry weight ratio. We thus suggest that P-plus or PP film is most appropriate packing for marketing of baby leaf vegetables, which should be stored at $8^{\circ}C$. Our data on baby leaf vegetables also make a significant new contribution in that we demonstrate a positive effect of stress touching on baby leaf processability.
To develop commercial semi-solid apple baby food, the physicochemical characteristics of apple puree in relation to different preparing methods and the effect of the addition methods of ascorbic acid on browning reaction were investigated. The preparing methods were classified into 3 groups by initial heating treatment: no heating (A), steaming at $120^{\circ}C$ (B), and blancing at $100^{\circ}C$ (C). The viscosity of tested apple puree was $2,600{\sim}5,856\;cp$, and contents of anhydrogalaturonic acid (AGA) and neutral sugar ranged $4.15{\sim}11.92\;mg%$ and $6.18{\sim}10.65\;mg%$, respectively. Among free sugars tested, level of fructose was the highest $(5.43{\sim}8.87%)$, followed by glucose $(2.11{\sim}4.23%)$, sucrose $(1.64{\sim}2.94%)$, in that order. Since small amounts of ascorbic acid were detected $(1.54{\sim}1.83\;mg%)$, it seemed to be lost by heating process in preparing of apple puree. For apple puree A, its lightness was lower and redness was higher than those of apple puree B and C. Its degree of browning of apple puree was so high that sodium ascorbic acid was added as a antibrowning agent. Puree had low sensory score and nutrient quality. The adding methods of ascorbic acid were classified into 4 groups by adding time: dipping, blending (2), heating (3), and blending + heating (4). Considering color and preference evaluation, preparing method B and adding method 2 showed the highest inhibitory activity on apple puree browning and desirable color for retort baby food. After retort sterilization, the viscosity of apple baby food was decreased from 3,477 cp to 2,294 cp, thiamin was destroyed completely, and the contents of riboflavin and ascorbic acid were decreased 41% and 21%, respectively. However, contents of free sugar and free amino acid and sensory parameter were not influenced by retort sterilization. In overall, the preparing method B-adding method 2 was a good processing condition for the retort apple baby food.
LEE Eung-Ho;PYEUN Jae-Hyeung;KIM Soo-Hyeun;CHUNG Seung-Yong
Korean Journal of Fisheries and Aquatic Sciences
/
v.8
no.1
/
pp.20-30
/
1975
It is matter of fact processing technology must affects the quality and yield of final product and these also depend on the selection of raw material directly or indirectly. So that the estimation of tile preprocessing condition of shellfish is of great importance for distributors and processors. This study was attempted to establish the basic data for evaluating the processing suitability of baby clam, which is one of the five important shellfishes for domestic use and export. The important results are as follows: 1. The ratio of meat volume and meat weight to the holding capacity by shells may be useful for measuring the condition index of baby clams. 2. Baby clams grown in the beds with the composition of a large quantity of gravel were low in condition index value than in sand and mud. 3. If the green feed phenomenon was the prime consideration for canned baby clams, tile most suitable harvest season if October. In this period, the digestive tract in body was almost colorless. 4. As a whole, seasonal changes of moisture and fat content in baby clams were reversely correlated. Protein content increased from April and slightly decreased for a while from July to August and increased again from September. In March, the content of glycogen was 6.3 to 6.8 percent. From this period to October, glycogen was rapidly decreased. In October, it was only 0.1 to 0.2 percent but increased from November. There were little seasonal changes in pH value and crude ash content. The pH value of meat was 6.0 to 6.2 and crude ash content was about 2 percent. 5. By the results of condition index and chemical composition of baby clams, the suitable harvest season as raw materials for processing was from March to June and from September to October. 6. The steamed baby clam meat was packed with 2 percent salt solution containing 0.15 percent, citric acid or 0.5 percent $Na_2$ EDTA in a round sanitary tin can coated with C-enamel that is 203.9 ml by volume and sterilized for 60 minutes at $112^{\circ}C$. The canned product has shown a good result to reserve the natural characteristics of baby clam through six month storage at room temperature.
LEE Eung-Ho;KIM Jeong-Gyun;CHA Yong-Jun;OH Kwang-Soo;KOO Jae-Geun;KWON Chil-Sung
Korean Journal of Fisheries and Aquatic Sciences
/
v.17
no.6
/
pp.499-505
/
1984
For the purpose of obtaining basic data which can be applied to processing of retort pouched shell-fishes, retort pouched seasoned baby clam was prepared. After sand and mud were removed, and then steamed baby clams were shucked. Baby clam meats were seasoned with the mixed seasoning powder containing $3\%$ of sugar, $2.5\%$ of salt, $12\%$ of sorbitol, $0.5\%$ of monosodium glutamate and $10\%$ of smoke flavor, and then dried at $35-40^{\circ}C$ for 3 hours. After dried, the meats were vacuum packed in plastic film bag (polyester/nylon/unoriented polyproylene; $12{\mu}m/15{\mu}m/50{\mu}m,\;15{\times}17cm$), and sterilized for 12 minutes in a hot water circulating sterilzer at $120^{\circ}C$, The factors such as pH, VBN, moisture content water activity, color value (L, a, b), texture, TBA value and viable bacterial count of products were determined during storage at room temperture ($20{\pm}3^{\circ}C$). The results showed that the product could be preserved in a good condition for 120 days at $20{\pm}3^{\circ}C$. Judging from the scores of sensory evaluation on flavor, the product added smoke flavor as seasoning was the most desirable.
Journal of the Korean Society of Food Science and Nutrition
/
v.13
no.4
/
pp.444-450
/
1984
Effects of muscle extracts of five species of fish and shell-fish, mackerel, jack mackerel, yellow corvenia, shrimp and baby-neck clam, on lipid oxidation were investigated using a model system consisting of methyl linoleate absorbed in micro crystalline cellulose and extracts of fishes. Ethanol extracts of both mackerel and jack mackerel apparently showed inhibitory effect on the oxidation of methyl linoleate, while the extract of yellow corvenia, and baby-neck clam showed a slight catalyzed effect on contrary. The ethanol extract of shrimp, however, revealed no effect on the oxidation of methyl linoleate. When the ethanol extracts were dialyzed, the outer fractions of dark fleshed fish had a strong inhibitory effect on the oxidation of methyl linoleate, while the inner fractions did not. The outer fraction of yellow corvenia showed catalyzed effect, but the inner fraction inhibited the oxidation slightly. The outer fraction of shrimp had a strong inhibitory action, but the inner fraction showed no effect. The methanol-water fraction of chloroform-methanol extract of shrimp showed a quite strong inhibitory effect on the oxidation, whereas that of four other samples did the same levels of effect as ethanol extracts.
The purpose of this study was to survey public preferences for dining space image styles depending on the types of passage rites in Korea and to determine potential differences in public preferences for dining space image styles depending on the types of passage rites in terms of various general characteristics such as gender, age, family type, and preference for the image and color styles of the dining space. As a result, this study determined the following: According to a public preference survey of dining space image styles depending on the type of passage rites, our respondents showed the highest preference for casual images (27.1%) at a party for a 100-day-old baby. Additionally, our respondents showed the highest preference for casual images (27.4%) when celebrating a baby's first birthday but showed the highest preference for romantic images (35.8%) when celebrating a baby girl's first birthday. Our respondents showed the highest preference for casual images (21.4%) for graduation ceremonies. Our respondents showed the highest preference for classic images (21.7%) at coming-of-age ceremonies for new adult men, but also showed highest preference for elegant images (26.2%) at coming-of-age ceremonies for new adult women. Moreover, the respondents showed highest preference for classic images (41.0%) at traditional wedding ceremonies but elegant images (24.1%) at modern wedding ceremonies. In contrast, the respondents showed highest preference for classic images (31.3%) for a 60th birthday party. The highest preference for classic images (28.9%) was found for a diamond wedding ceremony. Respondents showed highest preference for classic images (30.4%) for a funeral ceremony Finally, our respondents showed highest preference for classic images (32.5%) at memorial services (religious ceremonies).
Nutrition counselors in Korea often encounter difficulty in their attempt to change village women's attitudes regarding food taboos which are counter to good eating habits. There are a great many food superstitions which are not due to religious influence, but seem to be related to shape and composition of food. Many expectant mothers superstitiously avoid eating certain foods for fear that they may cause mental or physical abnormality in their babies. As was shown in a previous survey (Mo, 1966)of villages in all provinces except Jeju Island, such superstitions were common among pregnant and lactating mothers. Many food taboos and superstitions based on non-scientific and irrational ideas do exist even in modern society, and are a major obstacle to nutritionally adequate food consumption. A study of food taboos among women of Jeju Island was undertaken from November to December of 1976, these results to be compared as well with those of the previous study. There were 73 items found to be prohibited during pregnancy. Of these, 48.7% were of the deaf group, 17.4% fish, 5.5% eggs, 4.7% cereal, and only 2.2% fruit. Of 252% women respondents, 111 (45% ) abstained from eating chicken, duck, and shark because of the belief that they would cause their babies to be born with gooseflesh or shark skin. Many of them avoided rabbit meat for fear that their babies might be born with harelip. It was also feared that a baby would become disfigured if his mother ate duck, goat, dog meat, chicken or duck eggs, or soup made of bones. A common superstition was that highly spiced or salty foods would cause the fetus to be hairless. Squid and octopus were believed to cause babies to have weak bones, or none at all. Most of these food taboos were associated with fears concerning Physical structure and appearance of unborn babies. Other taboos were associated with fear of undesirable behavioral characteristics. For example, some mothers thought that a baby would pinch or bite the mother's breast during the weaning period, if crab meat were eaten during pregnancy. Unevenly sliced rice cake, loach, snake meat and eel were also believed to cause a baby to be ill-tempered. The findings of this study are remarkably similar to those of the previous study conducted by the authour in 1966. Most of the same food taboos, based on non-scientific and irrational reasons, were found on Jeju Island as on the peninsula, and thor were similarly wide-spread. The results of correlational analysis show that the most significant factors related to prevalence of food taboos, are level of education and religious background. Number of food taboos is correlated with level of education. Also, food taboos are least freqent among the Christian woman. Proper nutrition education should he undertaken in order to encourage intake of protein-rich food, particularly during pregnancy when nutritional needs of mother and fetus are great.
Journal of the Korean Society of Food Science and Nutrition
/
v.25
no.5
/
pp.774-778
/
1996
The changes in organic acid contents of sea mussel and baby clam during drying at 40, 50 and $60^{\circ}C$ and storage at low $temperature(4^{\circ}C)$ and room $temperature(20^{\circ}C)$ were investigated. Organic acids of 8 varieties were determined and the content of succinic acid occupied over 90% of total organic acids in sea mussel(410.9mg%) and baby clam(96.5mg%). Malic acid was in order in sea mussel(41.2mg%) and lactic acid was in order in baby clam(61.9mg%). The content of organic acids was decreased during drying and rate of decreasing was higher at low drying temperature(40 and $50^{\circ}C)$ than that of high drying $temperature(60^{\circ}C).$ The decreasing rate was higher at room $temperature(20^{\circ}C)$ storage and long storage periods than that of low $temperature(4^{\circ}C)$ storage and short storage periods.
KANG Jin-Hoon;CHEON Suk-Joe;LEE Hyeung-Il;LEE Yong-Woo;PARK Yeung-Ho
Korean Journal of Fisheries and Aquatic Sciences
/
v.17
no.4
/
pp.327-332
/
1984
This experiment was carried out to investigate the changes of cholesterol contents during the processing of various marine products. For the above purpose, squid, eel, mackerel, baby clam and sea mustard were sun-dried, roasted, salted-dried, boiled-dried and salted, respectively. In raw samples, the highest content of cholesterol was 761 mg/100g in squid, following by eel, baby clam, mackerel and sea mustard in order, and there was no significant relationship between cholesterol and lipid contents. The cholesterol contents of the used samples were decreased during the processing except baby clam. The decreasing ratios of the cholesterol contents during the processing were $66.4\%$ in squid, $43.6\%$ in eel, $41\%$ in mackerel and $58\%$ in sea mustard. While the cholesterol content of baby clam was increased by 1.6 times compared with that of raw sample. Considered from the results, it seems that the changes of cholesterol content during processing depended upon the changes of lipid content in the sample.
Journal of the Korean Society of Food Science and Nutrition
/
v.23
no.5
/
pp.757-766
/
1994
The survey was conducted to investigate several factors affecting the disease outcome with 116 infants aged 10 to 24 months residing in Kunsan city, Cheonbuk province . General characteristics, weaning practice , nutrient intake and the actual state for affecting disease were studied. Among many factors, mother's educational status was found to be the most influencing factor for affecting the disease outcome analyzed by oneway ANOVA. The exposure index disease, cold and diarrrhea, against mother's education were analyzed to find out the major factors for disease outcome. The education group up to middle school graduates, mother's job , nutrients supplements, feeding method, sex of baby were the factors, for the high school graduates, job , nutrients supplements were the causes, and the group graduated from the college the above grade mother's health state was the most important factor for the baby exposing to the disease. The disease outcome decreased when the bottle feeding was replaced by breast feeding, sufficient nutrients supplementation was recommended , and health care for mother during pregnancy was strongly advised.
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