• Korean Journal of Food Science and Technology
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• v.48 no.1
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• pp.42-47
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• 2016

The purpose of this study was to evaluate the quality characteristics in different types of Omija (Schizandra chinensis Baillon) powder tea. Raw Omija was prepared in three ways: 1) freeze-dried powder of whole Omija (FD), 2) freeze-dried powder of pressed Omija juice (PF), and 3) granules of pressed Omija juice (PG). Dried Omija was extracted and prepared in three ways: 4) freeze-dried powder (EF), 5) granules (EG), and 6) spray-dried powder (ES). The total soluble solid contents and turbidity were higher in PG, EG, and ES than those in other samples. $L^*$ value, pH, and reducing sugar contents were higher in PG and EG than those in other samples. Finally, $a^*$ value, $b^*$ value, total phenolic compounds contents, antioxidant activities, total anthocyanin contents, and schizandrin contents were lower in PG and EG than those in other samples. These results show that FD, PF, EF, and ES are more effective in outstanding redness and antioxidant activities compared to other Omija powder products.

• Food Science and Preservation
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• v.8 no.4
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• pp.351-355
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• 2001

This study was carried out to examine the of quality on the dried Omija according to its package materials and storage plates. The changes of moisture contents, anthocyanin content, molds damage rates, and color values were measured during storage. In the sealing up by the P.E file, the moisture contents of the dried Omija had just a little differences among the storage places, but in the gauze bag remarkably as the storage period goes on, especially in this case, 8 months later since the storage in the cool chamber, the damage rates of the dried Omija by the mold was 9.0%, twice as much as in the indoor bag packaging it was increasand after 10 months, that was lather high in the indoor and warehouse. The anthocyanin content of the dried Omija after the storage of 10 months was the highest at 0.05mm black P.E film package in the cool chamber, which was 55.7 mg/100g, but in the indoor and warehouse 39.7, 45.0mg/100g, respectively. These results show thats the storage conditions had an important effect on the quality of the dried Omija during the long-term storage.

• Food Science and Preservation
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• v.20 no.2
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• pp.284-288
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• 2013

Omija (Schizandra chinensis B.) slices were dehydrated with 20, 40, and 60% (w/w) red algae extract (RAE), and 40% of RAE was selected as the proper processing concentration considering the dehydration efficiency and cost of the dehydrating agent. The RAE-treated omija samples were compared with the hot-air dried samples in terms of the qualities such as the rehydration capacity and total phenolic contents. The rehydration ratios of the RAE-treated samples were greater than those of the hot-air dried samples by 31%. The total phenolic contents of the RAE-treated samples (1304.8 mg GAE/100 g) were higher than those of the hot-air dried samples (999.5 mg GAE/100 g). Therefore, omija slices can be dehydrated with RAE without quality loss.

• Journal of the Korean Society of Food Science and Nutrition
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• v.42 no.3
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• pp.441-449
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• 2013

This study was conducted to ferment high quality vinegar by using Omija fruit. Strains of bacteria producing acetic acid were isolated from spoiled Omija wine (OV1 and OV2) and traditional rice vinegar (RA). The bacterium was from optimally-oxidized Omija wine containing 6.0% ethanol and from Omija vinegar with 5.21% acetic acid by 14 days of fermentation. The Omija vinegar got the highest sensory score (5.80) among several commercial vinegars. The Omija vinegar showed a potent antibacterial activity against Staphylococcus aureus, Bacillus subtilis, Escherichia coli, and Pseudomonas fluorescens by the paper disc test, while Omija wine had limited antibacterial activity against S. aureus and P. fluorescens. The diameter of the clear zone formed by the paper disc test using Omija vinegar was not less than 9.5 mm. The DPPH free radical-scavenging activity of Omija wine was higher than that from Omija water extracts. The nitrite scavenging ability of Omija wine (36.98% of all nitrites present) and vinegar (31.14%) was higher than that from Omija water extracts (22.53%). Omija vinegar exhibited strong antibacterial and antioxidant activities. In conclusion, we prepared high quality vinegar from dried Omija.

• Journal of the Korean Society of Food Science and Nutrition
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• v.41 no.2
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• pp.254-260
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• 2012

This study was conduced to ferment high quality wine by using Omija fruit. Dry Omija farmed and dried in the Moonkyung area was used in this study. The Omija was soaked in 10~40 folds of distilled water to extract water-soluble components and the fluid was filtered after soaking for 6 hours at $50^{\circ}C$. Strains of alcoholic yeast were isolated respectively from spoiled Omija extract. Isolated alcoholic yeasts, OM-1 and OM-2, showed a round to ellipsoidal shape and formed white or milky white colonies on a solid YM medium. Two yeasts produced 10.33~11.23% alcohol from Omija extract adjusted to $10^{\circ}Brix$ with sugar. Their abilities to ferment alcohol were higher than those of other yeast strains belonging to Saccharomyces cerevisiae such as KCTC 7296 (standard strain of Korean Biological Resources Center), Makgeolli yeast, or beer yeast. The isolates OM-1 and OM-2 showed similar abilities in alcohol fermentation. However, the wine fermented by OM-2 got a better sensory score especially with color. Growth of OM-2 was significantly accelerated by addition of a 0.1% urea and 0.02% mineral mixture. A vitamin mixture was effective for the growth only when urea was added as well.

• Proceedings of the Korean Society of Crop Science Conference
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• 1999.05a
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• pp.206-207
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• 1999

• Korean Journal of Poultry Science
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• v.39 no.2
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• pp.121-131
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• 2012

To investigate the effect of dietary supplementation of freeze-dried plum (Prunus mume Siebold and Zucc., PMS) or omija meal (Schizandra chinensis Baill.; SCB) on growth performance, organ weights, blood biochemical profiles and antioxidant defense system, a total of 96, 3-day-old male broiler chickens were assigned to three dietary groups: (1) control diet, (2) control diet supplemented with PMS at 0.2%, (3) control diet supplemented with SCB at 0.2%. In vitro antioxidant activity, plum and omija extracts showed a significantly higher radical scavenging activity (RSA). In particular, omija extract showed much higher RSA than plum extract. Dietary addition of plum or omija did not affect body weight, feed intake, feed conversion and the relative weight of digestive organ in birds. Plasma triglyceride significantly (P<0.05) increased in birds fed the diet supplemented with omija compared with those fed control diet without affecting the other blood biochemical components. Furthermore, reduced form of glutathione (GSH) in the liver or muscle significantly (P<0.05) increased in birds fed the diet fortified with plum and omija. However, the specific activities of superoxide dismutase (SOD), glutathione peroxidase (GPX) and glutathione-S-transferase (GST) and MDA (malondealdehyde) in the intestine, liver and muscle were not altered by dietary antioxidant sources. In conclusion, dietary plum and omija resulted in a positive effect on some antioxidant indicators such as increased in vitro RAS in extracts and in vivo GSH level in the liver and muscle without affecting growth performance. Therefore, dietary addition of 0.2% of plum or omija could be applicable as potential antioxidant sources in broiler chick production.

• Microbiology and Biotechnology Letters
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• v.39 no.2
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• pp.146-152
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• 2011

In the course of a study in relation to the production of taste, and functional enhancements in root crop chips, which were prepared by soaking dried yam slices in fruit juices, we investigated the physiological characteristics and biological activities of 8 different commercially available juices including; apple, omija (fruit of Maximowiczia typica), grape, wild grape, orange, tomato, red ginseng and black garlic juice. The average water contents, pH, brix and acidity of the juices used were $85.59{\pm}5.80%$, $3.90{\pm}0.64$, $12.19{\pm}4.70%$, and $0.49{\pm}0.19%$, respectively. The polyphenol content of black garlic and grape juice were 1.50 and 1.21 mg/ml, respectively, and those were higher than the average content (0.57 mg/mL) of the juices. Evaluation of anticoagulation activity showed that only omija juice has a strong thrombin inhibition, which is comparable to that of aspirin (1.5 mg/mL). Omija, grape and orange juice all exhibited antibacterial activity, but no antifungal activity. The 8 different juices, and in particular grape and black garlic juice, showed strong antioxidant activity in DPPH and ABTS radical scavenging activity assays, with wild grape juice demonstrating potent nitrite scavenging activity. These results suggest that omija, grape and black garlic juice can be used as soaking solutions to produce taste, and other functional enhancements, for root crop chips.

• Journal of the Korean Society of Food Science and Nutrition
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• v.45 no.6
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• pp.851-858
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• 2016

The effective components of Schisandra chinensis are lignans (schizandrins and gomisins), which have various physiological functionalities such as anti-cancer, anti-inflammatory, and antioxidant activities. This study was carried out to determine the different parts of fruits in Schisandra chinensis to elevate their usefulness. Schisandra chinensis was separated into skin (epicarp), pulp (mesocarp), and seeds, and raw Omija and hot-dried Omija (HDO) were used as control. The most abundant component was nitrogen free extract (6.88~56.70%) followed by crude lipids (1.65~19.04%). The main mineral was K (383.10~2,024.10 mg/100 g), except in seeds where P was the main mineral. The main lignan in all parts of fruit was schizandrin, and the highest content of schizandrin was 9.46 mg/g in dried seeds. Total lignan content was 25.97 mg/g and 14.97 mg/g in dried seeds and HDO, respectively. A total of 17 components of fatty acids in seeds and HDO were detected, of which linoleic acid (72.66~73.78%), oleic acid (14.78~17.39%), palmitic acid (2.88~3.54%), and capric acid (1.70~4.93%) were determined as the major components. Main lignans and fatty acids of Schisandra chinensis fruit contain mainly seeds. Therefore, it is more efficient to use seeds than pulp and extract of fruit itself to use the components of Omija.

• Journal of the Korean Society of Food Culture
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• v.37 no.4
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• pp.310-323
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• 2022

The purpose of this study was to investigate the preparation and cooking processes used to prepare Eungi in cookbooks published from the 1700s to the 1900s. 'Eungi' is a thin gruel made of starch powder. Fourteen historical cookbooks were included and investigated for the preparation of ingredients and processing methods. Fourteen types of eungi were identified. Arrowroot eui and kuseonwangdogo eui were found in 『Kyuhapchongseo』 written in the early 1800s, and many types of eungi (i.e. job's tears eungi, arrowroot eungi, sorghum eungi, lotus root eungi) were mentioned in 『Kunhakhoedeung』, but unfortunately, ingredients and cooking methods were not included. 'Eungi' was made by boiling starch powder prepared using the 'subi method', that is, dried after grinding main ingredients such as job's tears using a millstone followed by soaking and settling. Eungi boiled with water or omija water were seasoned with the sugar or honey, and salt. These eungis were used for stomach complaints and hangovers and to promote longevity.