• Journal of the Korean Society of Food Science and Nutrition
• /
• v.41 no.4
• /
• pp.519-525
• /
• 2012

Effects of cultivated conditions on antioxidant compounds and antioxidant activities of sweet potatoes (Ipomoea batatas (L.) Lam) were determined. The cultivated variety was Shinyulmi, and they were cultivated in a conventional culture, successful cropped hairy vetch culture, successful cropped barley cultivation, successful cropped rye cultivation, successful cropped mix-seeding of hairy vetch and barley, successful cropped mix-seeding of hairy vetch and rye, and not fertilizer. The brix degree, moisture, protein, and ash content of the sweet potatoes did not significantly change with the cultivated conditions. However amylose, total dietary fiber, and mineral content had significant changes. The total polyphenol, flavonoid, and tannin content of the methanolic extracts of the sweet potato's pericarp showed significant differences from cultivated conditions, however, the sweet potato's sarcocarp did not significantly change. The highest DPPH and ABTS radical scavenging activities of the methanolic extracts of the sweet potatoes were 958.81 and 663.53 mg TE/100 g in the sweet potato's pericarp on the successful cropped hairy vetch culture. Generally, there was a difference in antioxidant compound content and radical scavenging activity on the methanolic extract of sweet potato with cultivated conditions.

• Journal of The Korean Society of Grassland and Forage Science
• /
• v.31 no.4
• /
• pp.441-450
• /
• 2011

This study examined the effects of feeding whole-crop barley silage (BS), corn silage (CS) and the mixture of BS and CS (CB) on feed consumption, daily gain, nutrients apparent digestibilities and blood parameters in order to investigate the feed evaluation in Korean black goats. BS, CS, and CB were fed to twelve Korean black goats, which were allocated into three groups in metabolic cages according to the latin-square design. As a result, dry and organic matter intakes for goats per day have shown a tendency to decrease in the order of CS, CB and BS, but there were no significant differences. We also found a similar tendency when the intakes of crude protein, crude fat, and non-fiber carbohydrates (NFC) were examined. However, ADF and NDF consumptions showed a decreasing tendency in the order of CB, BS and CS. Dry matter intakes per metabolic body weight showed the decreasing tendency in the order of CS (57.6g), CB (53.8g) and BS (52.7g), however with no statistical differences. Average daily gain of 64.2 g in CB was significantly higher than the other groups (42.0g to 46.0g). Nitrogen intakes and nitrogen retention showed a decreasing tendency in the order of CS, CB and BC. Nevertheless, nitrogen retention in CS group was higher by 30% than that of the BC group with p<0.05. Apparant digestibilities of dry and organic matters were 72.6 and 72.8% for the CS group respectively, which were significantly higher than those of the BS group (67.5 and 69.0%) and the CB group (66.0 and 67.1%). In conclusion, the results of this study demonstrated that the CS group showed more positive feed consumption, digestibility, and nitrogen retention in Korean black goats than those of BS group. The CB group, however, showed similar results to the results of the CS group.

• Korean Journal Plant Pathology
• /
• v.1 no.3
• /
• pp.157-164
• /
• 1985

Some interactions in various soil conditions, numbers of microbial populations, root rot disease development and rates of spore germiation in three different location of soils were investigated. The calcium and magnesium contents were higher in replanted fields of ginseng (Panax ginseng) at Goesan. Potassium contents were high in replanted field at Poonggi and textural class of the soils was silt loam except for silt clay loam in first cultured field of ginseng at Goesan. For the germination process of Fusarium solani, F. moniliforme, F. oxysporum, and Alternaria panax, the percentage germination of fungal spores was high in double distilled water and Pfeffer's solution as media, whereas the lower rate of germination of spores was observed in soil extracts. Numbers of bacteria were high in replanted field soil at Gumsan, and propagules of fungi in replanted fields at Gumsan and Poonggi were higher than other soils, but higher numbers of actinomycetes were found in the first cultured field of ginseng at Goesan and Poonggi. Fungistasis was induced by higher microbial populations present in soil that was initiated when amended with garlic stalk, crushed bean and ginseng leaves. On the other hand, there was no fungistasis in soil amended with wheat and barley straw, and this tendency was a little difference on the soil sample.

• Food Science and Preservation
• /
• v.24 no.7
• /
• pp.949-956
• /
• 2017

This study attempted to find optimum extract range of active ingredient for barley sprouts (Hordeum vulgare L.). Extracts from Hordeum vulgare L. were made by microwave extraction method and total polyphenol content (TPC), total flavonoid content (TFC), DPPH radical scavenging activity (DPPH) were measured with extract of Hordeum vulgare L.. Response surface methodology (RSM) was applied to a extraction process, and central composite design (CCD) was also used for this process to examine the optimum condition. Independent variables ($X_n$) are concentration of ethanol ($X_1$: 0, 25, 50, 75, 100%), microwave power ($X_2$: 60, 120, 180, 240, 300 W), extraction time ($X_3$: 4, 8, 12, 16, 20 min). Dependent variables ($Y_n$) are TPC ($Y_1$), TFC ($Y_2$), DPPH radical scavenging ($Y_3$). It is formed by sixteen conditions to extract. The $R^2$ value of dependent variables is ranged from 0.90 to 0.97 (p<0.05). Experiments values within the optimal range (40% of ethanol concentration, 120 W of microwave power, 18 min of extraction time) were 3.74 mg GAE/g (TPC), 3.00 mg RE/g (TFC), 35.43% (DPPH), respectively. Under the optimized conditions, predicted value showed no significant difference comparing with the experimental values.

• Proceedings of the Plant Resources Society of Korea Conference
• /
• 2018.04a
• /
• pp.99-99
• /
• 2018

본 연구는 4종의 산야초 추출물(개느삼, 엄나무, 참취, 60가지 산야초혼합 - 모두 원 식물재료를 설탕과 혼합하여 추출한 발효추출물을 15년 숙성시킨 원액의 3% 수용액으로 처리)과 8종의 허브 정유(베르가모트, 클라리세이지, 휀넬, 제라니움, 마조람, 타임, 로즈우드, 스페어민트 원액의 0.3% 농도로 처리) 및 2종의 호르몬(지베렐린, 카이네틴, 0.3%)을 2종의 보리종자(1998년산 새올보리, 2016년산 찰쌀보리) 발아율 향상에 영향을 미치는지를 알아보고자 수행하였다. 특히 새올보리 묵은 종자의 발아력 증진에 효과가 있는지 알아볼 목적으로 수행하였다. 묵은 종자 새올보리의 무처리구에서 8%와 43%의 낮은 발아세와 발아율을 보인 반면, 산야초 추출물 처리구에서 84~93%와 86~100%의 높은 발아세와 발아율을 보였다. 호르몬처리구는 새올보리에서 발아세와 발아율은 각각 43~87%와 55~95%였다. 또한, 찰쌀보리의 경우 무처리의 발아세와 발아율은 각각 54%와 91%였다. 반면, 산야초 추출물 처리구에서 92~100%의 발아세와 95~100%의 높은 발아율을 보였고, 호르몬 처리구에서는 각각 77~85%와 87%의 발아세와 발아율을 보였다. 무처리(증류수)와 2종의 호르몬 및 8종의 허브 정유에 비해 산야초 추출물의 발아 증진 효과가 현저하게 높았다. 특히 냉장고($4^{\circ}C$)에서 20년 보관한 묵은 보리종자에 대해서도 유의한 발아율 향상을 보였다. 정유는 대체로 발아를 억제하는 것으로 나타나 잡초 종자에 대한 발아억제(제초제 대용) 가능성을 시사한다.