• Food Science of Animal Resources
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• v.41 no.6
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• pp.1049-1059
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• 2021

The objective of this study was to evaluate the nutritional content of bullfrog meat from different parts of the animal, including fore-chest, thigh and calf. Bullfrog meat was found to be a rich source of proteins, essential amino acids and minerals, but with a low fat content, compared with other aquatic meat products. There was no significant difference (p>0.05) between thigh and calf in mineral content (K, P, Na, Mg, Ca, Zn, Fe, Cu, and Mn), but the contents of K, P, and Mg were higher in thigh and calf than in the fore-chest (p<0.05). The salt-soluble, water-soluble and insoluble protein bands in sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) electrophoresis, from fore-chest, thigh and calf were similar, with the most abundant bands being 35 kDa (salt-soluble protein), 35-48 kDa (water-soluble protein) and 48 kDa (insoluble protein). The results showed that the insoluble protein content in the fore-chest meat was higher than that in the thigh meat and calf meat, but the salt-soluble protein fraction was the most abundant in thigh meat. These results showed that the nutrients in different parts of bullfrog meat were different.

• Proceedings of the Korean Society for Applied Microbiology Conference
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• 2003.06a
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• pp.14-17
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• 2003

• Proceedings of the Korean Society of Community Living Science Conference
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• 2011.10a
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• pp.111-111
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• 2011

• Proceedings of the Korean Society of Community Living Science Conference
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• 2011.10a
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• pp.110-110
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• 2011

• The Korean Journal of Pesticide Science
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• v.16 no.4
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• pp.406-408
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• 2012

• Korean Journal of Environmental Agriculture
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• v.35 no.3
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• pp.184-190
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• 2016

BACKGROUND: Anthocyanins, potential health-promoting compounds, were major natural pigment in the blueberry (Vaccinium corymbosum L.). The objectives of this study was to investigate anthocyanin glycosides in the blueberry varieties.METHODS AND RESULTS: A total of seventeen anthocyanins were identified from highbush blueberry using HPLC (representatives, 530 nm) and ESI-MS in positive ion mode. The individual anthocyanins are containing cyanidin, delphinidin, malvidin, peonidin, and petunidin moieties which are acylated with aliphatic acid (acetic acid) and conjugated with sugar moieties (arabinose, galactose, and glucose). Among them, delphinidin 3-O-galactoside (D3Ga), peonidin 3-O-glucoside (Pn3G) + malvidin 3-O-galactoside (M3Ga) were major compounds in varieties. Total anthocyanins were found the highest level in 'Elizabeth' (1,406.3 mg/100 g dry weight) which was 3-fold higher than 'Darrow' (465.7). Especially, D3Ga was presented the 32% of total anthocyanins followed by Pn3G + M3Ga (20%) in 'Elizabeth'.CONCLUSION: This result was showed as valuable information regarding nutritional properties of the different varieties of the highbush blueberry.

• The Korean Journal of Food And Nutrition
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• v.33 no.6
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• pp.655-665
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• 2020

In this study, chemical information on a total of 20 individual compounds was constructed to identify isoflavones from the previous reports related with used parts(seeds, leaves, stems, pods) and products of soybean(Glycine max L.). Through constructed library and UPLC-DAD-QToF/MS analysis, a total of 19 individual isoflavones including aglycones, glucosides, acetylglucosides and malonylglucosides as major compounds was identified and quantified from 14 selected soybean seeds. Among them, genistein 7-O-(2"-O-apiosyl)glucoside and genistein 7-O-(6"-O-apiosyl)glucoside(ambocin) were identified tentatively as novel compounds in soybean seeds. Besides, among malonylglucosides, glycitein 4'-O-(6"-O-malonyl)glucoside was estimated for the first time. Total isoflavone contents were distributed from 240.21 to 445.21(mg/100 g, dry matter) and 7-O-6"-O-malonylglucosides were composed of 77.8% on total isoflavone as well as genistein derivatives were confirmed as major class. It was considered importantly that the development of isoflavone-rich varieties was necessary to strengthen their effects such as anti-inflammation, anti-cancer and menopause mitigation. The qualitative and quantitative data presented precisely in this study could be help to select and breed isoflavone-rich varieties. Furthermore, their basic isoflavone profile is expected to be applied to estimate the change of isoflavone conjugates on bioavailability after soy food supplements.

• The Korean Journal of Food And Nutrition
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• v.27 no.6
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• pp.1090-1095
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• 2014

Anthocyanins, a class of flavonoids, are natural water-soluble pigments, which are mainly found in vegetables and fruits. Anthocyanins have attractive pharmacological activities, such as anti-oxidant, anti-inflammatory, anti-cancer, and anti-diabetic. The purpose of this study was to investigate the protective effects of anthocyanins-rich fraction (ANF) from Korean purple sweet potato variety, "Shinjami", against hydrogen peroxide ($H_2O_2$)-induced oxidative stress. In our results, pre-treatment of HepG2 cells with ANF ($10{\mu}g/mL$) significantly prevented cell death and maintained cell integrity, following exposure to 0.9 mM hydrogen peroxide. The $H_2O_2$-dependent production of intracellular ROS was also significantly decreased by pre-treatment with ANF (6 h, $10{\mu}g/mL$). In addition, ANF increased the mRNA levels of antioxidant enzymes, catalase and glutathione level in $H_2O_2$-treated HepG2 cells. These results indicated that ANF protected HepG2 cells against $H_2O_2$-induced oxidative stress by inducing protective system.

• Journal of the Korean Society of Food Culture
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• v.26 no.3
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• pp.220-229
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• 2011

This study attempted to understand the perception and the degree of trust that consumers had in the national agricultural food accreditation system, to inquire into and examine the consumers' perception of traditional food quality certification performed for the protection of excellent traditional food, and to propose the right direction for the policies on the traditional food quality certification system and the plans to improve consumers' perception of the system. According to the results of this survey performed in married women, based on the 'the recognition of accreditation system' and 'the recognition of certification marks' of 'the seventh national agricultural food accreditation system' presently being used by the Ministry for Food, Agriculture, Forestry and Fisheries, the household food purchasers showed high recognition for eco-friendly agricultural product accreditation, processed food KS certification, and organically processed food certification in that order. Meanwhile, it was shown that they indicated low recognition for the traditional food-related accreditation systems such as 'traditional food quality certification' and 'food grand master'. It was found that reliability of the certification mark provided by the agricultural food accreditation system gained 3.54 points (on a 5-point scale), and 68.1% of the study subjects referred to the certification marks while purchasing agricultural foods. And most of them answered to the question of 'why they referred to the certification marks' saying that it was done 'to choose safe food'. The most frequent answer to question of 'the means to recognize the traditional food quality certification system' was 'broadcasting, advertising'. 57.3% of the subjects had a previous experience of buying a product certified by the traditional food quality certification system, and 93.2% of all the subjects had the intention to buy a product certified by the traditional food quality certification system later. And most of them answered that 'strengthening government policies' would be the most ideal way to inform the public of the traditional food quality certification system. According to the results of this study, while 'relying on the traditional food quality certification system in general' was relatively high among the consumers, 'intention to buy quality certified products by visiting a distantly located store' was low; thus, from this analysis, it can be seen that there is a need for diversification of places selling these quality certified products and to establish a distribution network for these products.

• Korea Trade Review
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• v.47 no.2
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• pp.1-18
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• 2022

This paper examines the effects of export subsidies on agricultural food exports, focusing on a case of Gyeongsangbuk-do. Using monthly data of agricultural food exports during 2007-2020 and the GLS regression analysis, we test the hypothesis whether the export subsidies would increase the exports of four major agri-food categories with three digit codes of HS such as fruits, vegetables, flowers, and mushrooms. Evidence shows that the export subsidies had statistically significant impacts on the agri-food exports except flowers. In order to test the robustness of the analysis, the agri-food export subsidies are reclassified into four sub-subsidy policies, and the analysis re-examines the effects of the sub-subsidies on agri-food exports. It shows that export policies for production stabilization, logistics, and overseas marketing promote the exports of agri-foods significantly. Alternative export policies are drawn in this study since the existing subsidies conflict with the WTO agricultural agreement.