• Food Science and Preservation
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• v.24 no.1
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• pp.125-133
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• 2017

This study evaluated the changes of physiochemical properties, phytochemical contents, and biological activities during the vinegar fermentation of Elaeagnus multiflora fruit. The contents of pH and reducing sugar decreased from 3.55 and 6.88 mg/mL 3.34 and 2.13 mg/mL, respectively. However the acidity increased from 0.48% to 5.48% during the vinegar fermentation. The alcohol contents increased up to a maximum value of 6.6% at 20 days, and it then decreased at the end fermentation days (2.0%). The viable numbers of acetic acid bacteria and yeasts increased from 4.32 log CFU/mL and 3.23 log CFU/mL at 10 days to 5.4 log CFU/mL and 5.5 log CFU/mL during the spontaneous fermentation, respectively. The major organic acids were acetic acid (38.84 mg/mL), lactic acid (4.92 mg/mL), and malic acid (1.51 mg/mL). The soluble phenolic and flavonoid contents increased from 0.79 mg/mL and 0.12 mg/mL of initial fermentation day to 1.22 mg/mL and 0.14 mg/mL during the spontaneous fermentation. Content of epicatechin gallate decreased from $168.1{\mu}g/mL$ at 10 days to $115.97{\mu}g/mL$. However the content of gallic acid increased from $18.52{\mu}g/mL$ to $95.07{\mu}g/mL$ during fermentation. After 60 days of the fermentation, the antioxidant and digestive enzyme inhibitory activities were 71.35% (DPPH), 79.27% (ABTS), 68.72% (${\cdot}OH$), 85.42% (${\alpha}$-glucosidase), 52.12% (${\alpha}$-amylase), and 53.66% (pancreatic lipase), respectively.

• Journal of the Korean Society of Food Science and Nutrition
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• v.38 no.3
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• pp.372-376
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• 2009

Physicochemical changes in persimmon were examined during natural organic acid fermentation. Major organic acids in raw persimmon juices were lactic acid (980 mg%) and acetic acid (245 mg%). The content of acetic acid was continuously increased during the whole period of fermentation up to 3 years. Glucose was the dominant free sugar, but the content was decreased after 20 days of fermentation. Most of the glucose was converted to ethanol until 40 days after initiation of acid fermentation. L- and a values of Hunter's color in fermented persimmon juice, which was naturally exuded from persimmon fruit as fermentation continued, increased gradually, while b value decreased. Acetic acid (1584 mg%) was the most abundant organic acid followed by lactic acid (712 mg%) and citric acid (48 mg%) in a persimmon fruit juice after completion of 3 year fermentation. A minute amount of residual free sugars, mainly glucose, even after 3 years of fermentation may cause changes in quality characteristics while storage for edible use.

• Food Science and Preservation
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• v.14 no.3
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• pp.263-268
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• 2007

This paper was study to develop an extract of Elaeagnus multiflora as a materials of beverage, and was part of a wider project to use Elaeagnus multiflora for the development of processing foods. This was sought to optimize various sensory characteristics of color and flavor. The highest color score was 5.15 points. This was attained with 5.2%(v/v) Elaeagnus multiflora extract and 3.2%(v/v) brown rice vinegar. The highest flavor score was 4.06 points, and was arrived which added 10.8%(v/v) Elaeagnus multiflora extract and 0.4%(v/v) brown rice vinegar.

• Journal of the Korean Society of Food Science and Nutrition
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• v.42 no.5
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• pp.736-742
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• 2013

The physiochemical properties of commercial fruit vinegars were compared according to fermentation methods. Type A vinegars were synthesized through acetic acid fermentation while Type B vinegars were produced using both alcohol and acetic acid fermentation serially. There were differences from using these fermentation methods; Type A vinegars had a lower pH and slightly higher total acidity than Type B vinegars. The content of total sugar and reducing sugar were relatively higher in Type B vinegars, which showed a higher content of the free sugars (fructose, glucose, sucrose, and maltose). The intensity of brown color and Hunter's a and b values were also high in Type B vinegars. In contrast, the content of organic acids was higher in Type A vinegars, which were mainly composed of acetic, tartaric, malic, and succinic acid. We were also able to estimate the fruit juice content of vinegars through its content of organic acids. Type B vinegars contained a higher total phenolics and flavonoids content than Type A vinegars, and showed a higher DPPH radical scavenging activity.

• Food Science and Preservation
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• v.17 no.5
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• pp.616-624
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• 2010

We compared the physicochemical properties of, and volatile components in various commercial fruit vinegars (made from apples, grapes, and persimmons). Total acidity was highest in grape vinegars. Significant between-sample differences were evident in total and reducing sugar contents. Brownness, turbidity, and overall color difference (the ${\Delta}E$ value) were highest in persimmon vinegars. Free sugars were composed mainly of fructose, glucose, sucrose, and maltose. Major organic acids were present in the (descending abundance) order acetic acid, oxalic acid, citric acid, malic acid, and succinic acid, among-samples difference were negligible. Nine-essential free amino acids were detected in nine types of grape and persimmon vinegars, and in six varieties of apple vinegar. Among 17 types of volatile compounds identified in apple vinegars, 12 in grape vinegars, and 33 in persimmon vinegars, the main volatile components were acetic acid, ethyl acetate, isoamyl acetate, isovaleric acid, isoamyl alcohol, propanoic acid and phenethyl acetate. Volatile chemicals in commercial fruit vinegars were effectively analyzed using a SAW e-nose.

• Korean Journal of Plant Resources
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• v.22 no.5
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• pp.438-445
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• 2009

This study was conducted to examine the chemical characteristics, antibacterial activity and dyeability of several juices made from Persimmon cv. 'Gyeongsanbanshi'. Young fruits of persimmon were harvested at 1st August, 2006. Fruit juice was extracted soon after harvesting, some of them were stored at $4{\sim}6^{\circ}C$ for 6 months or fermented at room temperature for 6 months. $L^*$ values of vinegar was 43.5 higher than those of fresh juice and fermented liquor. Inorganic matter contents in fresh juice, fermented liquor and vinegar were higher in the order of K ($1696{\sim}2880\;mg$/100 g), Ca ($166.7{\sim}417.9\;mg$/100 g), Mg ($203.9{\sim}214.4\;mg$/100 g), P ($37.9{\sim}109.8\;mg$/100 g), Na ($13.2{\sim}23.3\;mg$/100 g) and Fe ($8.4{\sim}14.2\;mg$/100 g). Cotton fabrics dyed with the fermented liquor and vinegar had the largest inhibitory zone against the gram-positive microorganisms with range of $16.0{\sim}35.0\;mm$. Cotton fabrics dyed with the fresh juice showed $9.0{\sim}9.5\;mm$ inhibitory zone against the gram-negative microorganisms, $15.0{\sim}21.0\;mm$ with the juice stored at $4{\sim}6^{\circ}C$ for 6 months, $22.0{\sim}23.0\;mm$ with the fermented liquor and $9.0{\sim}35.0\;mm$ with vinegar. The hue of cotton fabrics dyed with the fermented liquor had a YR levels, and antibacterial activity of them were 78.5%.

• Journal of the East Asian Society of Dietary Life
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• v.6 no.2
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• pp.235-255
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• 1996

Natural substances, exploited in our daily life, have been applied to drugs to treat diseases and developed to functional foods by appropriate preparations, and these foods give beneficial effects on physical activities. In this paper, the utilization of traditional functional foods was studied with refer ring to old ancient writings published in the front-end of Chosun dynasty. The utilized vegetables were march mallow, turnip, radish, Chinese cabbage, lettuce, spinach, cucumber winter buds, flesh of a cabbage, eggplant, taro, burdock, Parsley, watershield plant, crown daisy, bamboo shoots, garlic, scallion, onion, acorn, bark of a tree, white goosefoot leaf, leaf of bean, pine mushroom, bracken. yam, mugwort, tea, ginseng, peppermint, fruit of the Maximowiczia chinensis, smartweed and pepper. The utilized fruits were chestnut, Chinese date, pine nuts, walnut, gingko nut, citrus. crab apple, pear, peach, grape, pomegranate, plum, Chinese quince, fig and watermelon. The utilized cereal were rice, barley, bean, buckweat and Job's-tears. The utilized sweetenings and seasonings were honey, wheat-gluten, sugar, oil, salt, soy sauce and vinegar. Our ancestors had a balanced diet using the various foods, and especially had a fundamental concept of "Foods have the efficacy of a remedy".edy".uot;.

• Food Science and Biotechnology
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• v.16 no.4
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• pp.526-530
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• 2007

The objective of this study was to establish the optimum alcohol fermenting conditions for the processing of kiwi wine and vinegar products. Six yeast strains were examined for their alcohol production from kiwi at $30^{\circ}C$ for 72 hr with continuous shaking at 100 rpm. Under these conditions, Saccharomyces kluyveri DJ97 produced the highest alcohol content of 10.2%. As the fermentation time extended to 96 hr, the alcohol content reached a maximum of 12.75%. The optimum alcohol fermenting conditions for kiwi fruit were accomplished when kiwi was added to an equal amount of water, inoculated with S. kluyveri DJ97 and fermented at $30^{\circ}C$ for 96 hr with continuous shaking. The content of soluble solids decreased as the alcohol concentration increased, whereas little change was observed in the pH and titratable acidity during the low temperature aging process. Other alcoholic compounds, such as methanol, isopropanol, n-propanol, isobutanol, and isoamylalcohol, tended to increase as fermentation progressed.

• Journal of the Korean Society of Food Culture
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• v.5 no.2
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• pp.193-205
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• 1990

It is not known that when and by whom 'The Lee's UmsikBup' was written. This cookbook is written purely in Korean and has not been published yet. There is another book named 'UmsikBup' in the cookbooks of the Chosun Dynasty and there are many books with similar names. So this book is tentatively named 'The Lee's UmsikBup'. This book comprises fifty three items, among which there are fifteen items of rice alcoholics, three items of Gook-Su (noodles), sixteen items of side dishes, seventeen items of Tuck (rice cakes) and Guaja(kookies), and two items of fruit punch and tea. Three items were illegible because the lines were erased or the letters were not clear. The cereals needed for making rice alcoholics were sixty four percent regular rice and thirty six percent sticky rice. As for the processes, the process using Jee-ae-bop took up fifty five percent. As for side dishes, pheasants, which are seldom used for food these days, were then popular for food. And the entrails of domestic animals were much used for food. Seeing that red pepper paste mixed with vinegar was used for steamed breams (Jim) and that red pepper was used for Yeolgooja Tang, we can estimate that this book was written after red pepper was introduced. Inferring that Chohong Chang (red pepper paste mixed with vinegar and honey) is found Jinchan Ye Que, we can estimate this book was written in the late 1800's. The cereals used for making rice cakes were ninety two percent sticky rice and eight percent regular rice. Sticky rice was much more used and pepper was used for making Tuck (rice cakes) as Hun Chal Byung, So Ham Byung and Dootum Tuck. The analysis of the terms used in this book revealed that 117 items were used for cooking processes. And it also showed us that there were six kinds of cutting and thirteen kinds of heating procedure. The shapes and sizes of foods were revealed on the basis of real things. The measuring units are hard to revive since the measurements were taken by the container then in use. Thirty four kinds of containers and cookers, twenty more of which are now in use, were used for preparing foods. The use of ‘twigs stretched for the east’ had no scientific base but said something of Korean folkways at that time.

• Journal of the East Asian Society of Dietary Life
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• v.4 no.3
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• pp.1-19
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• 1994

In this paper, twenty-five kinds of food presented in Sooljip(戌集) 5 and 6 of Food collections of 'Kosa-sibi Jip(攷事十二集)' have been classified into four : Staple food, subsidiary food, Tuck(rice cake) and Han-gwa(Korean confectionery), and Tang-jng and tea. Cooking processes have been examined and scientifically analyzed in terms of cooking, Fourteen kinds of Jook (thick gruel with cereal) as well as Urak-Jook were presented among the methods of making Jook, one of staple foods. Milk and ground rice were boiled together into Urak-Jook, which was nutritious because of carbohydrate, added to milk. Hong-sa Myun was mode of ground shrimps, ground bean, ground rice and flour which were kneaded together. It was a nutritiously balanced food. Nineteen kinds of Kimchi presented in this book were classified by the recipes. The five of Jook-soon Ja, U-so Ja, Tam-bok Ja and Jo-gang were made by adding red malt and cereals(boiled rice or candies). Jo-gang, Jo-ga and Jo-gwa-chae were made by adding salt and rice wine. With salt and fermenters added, eight were made. Chim-jup-jeo-ga was made by adding Jang(soy-bean sauce) and the inner chaff of wheat instead of salt. The four of Ka-za-san, Hwang-gwa-san, Tong-gwa-san and Jo-gang were made by adding salt and vinegar. Jo-gang was made by adding salt, rice wine, residue of rice wine and candies. The four of Kae-mal-ga, Ku-cho-chim-chae, Un-gu-hwa and Suk-hwa-chim-chim-chae were made by adding salt and spices. San-got-Kimchi was made without salt. San-got-Kimchi and Suk-hwa-chim-chae were made originally in Korea. Suk-hwa-chim-chae, in particular, was first classified as a kind of Kimchi in this book and oysters were added, which is notable. Pork could be preserved longer when smoked oven the weak fire of thatch ten days and nights. Dog meat was sauced and placed on the bones in a pot. A porcelain was put on the top of the pot. Flour paste sealed the gap between the porcelain and the pot. Some water was poured into the porcelain, and the meat was steamed, with two or three thatched sacks burned, which was a distilled dry steaming. This process has been in use up to now. Various cooking methods of chicken were presented from in Umsik-dimi-bang to in Chosun Musang Sinsik Yori Jebup. These methods were ever present regardless of ages. Such measuring units as Guin(斤) and Nyang(兩) were most frequently used in cooking processes of this book, except in case of Jang(soy bean sauce), vinegar and liquor. Twenty eight kinds of kitchenware and cookers were used, of which porcelains wee most used and pans and sieves followed. The scientific eight cooking methods were as follows. First, salt was refined through saturated solution. Next, it was recommended Hong-sa Myun containing shrimps should not be taken along with pork, which is thought to be a proper diet in terms of cholesterol contained by shrimps and pork. Third, meat was coated with thin gruel and quickly roasted and cleared of the dried gruel membrane, which prevented nutrients from exuding and helped to make the meat well-done. Fourth, The fruit of paper mulberry trees has the protease which can soften meat. Therefore when meat was boiled with th fruit of paper mulberry trees, it can be softened easily. Fifth, pork was smoked over the weak fire of thatch. Sixth, in cooking dog meat, distilled dry steaming raised the boiling point and made it possible to preserve meat longer. Seventh, in boiling the sole of a bear, lime was added, which made meat tender by making the pH lower or higher than that of raw meat. Finally, in boiling down rice gluten, a porcelain in the pot prevented boiling over the brim, which is applied to pots in which to boil medical herbs.