• 농업기술회보
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• v.49 no.5
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• pp.36-36
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• 2012

팥은 비타민 B1이 곡류 중에 가장 많이 함유되어 있으며 식이섬유가 풍부하고 사포닌 성분을 포함하고 있어 변비와 과식을 방지하는 데 좋다. 때문에 전통음식인 팥죽을 비롯하여 떡, 빵, 과자, 팥빙수 등의 앙금 및 양갱 재료로 널리 사용되고 있다. 최근에는 현대인의 건강식뿐만 아니라 천연 색소, 다이어트 음료, 미백용 화장품 등 다양한 용도로 사업화 되고 있다. 현재 국립식량과학원에서는 팥 소비 증진과 가공산업 활성화를 위해 다양한 색상의 기능성 팥을 연구하고 있으며, 이번에 개발된 검구술은 검정색 종피로 항산화 활성이 우수하여 기능성 가공식품 개발에도 사용될 수 있을 것으로 기대된다.

• Food Science and Preservation
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• v.30 no.5
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• pp.833-846
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• 2023

Onions are essential vegetables for Koreans' diet and have various physiological activities. However, problems arise every year due to the imbalance between production and demand. Therefore, in this study, nutritional and functional components, and antioxidant activity were analyzed for each growth period in order to utilize onions at the disposal period. Whole onions harvested before June showed higher values of general ingredients, inorganic ingredients, organic acids, spiraeoside, quercetin, total chlorophyll, and antioxidant activity than bulbs harvested in June. On the other hand, the free sugar content was higher in the bulb of the harvest season in June than in whole onions. The total thiosulfinate content was similar to that of whole onions and bulbs in the early stages of growth. In addition, as a result of comparing the flavonoid compound and antioxidant activity of each onion variety, whole onions harvested at 25 weeks were higher in content than onion bulbs harvested in June. In conclusion, onions before the harvest season in June had excellent utilization value as food. Harvesting before 21 weeks is desirable for growing onions with excellent nutritional value, while harvesting after 23 weeks is recommended for excellent functional components and antioxidant activity in onions.

• Journal of the East Asian Society of Dietary Life
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• v.24 no.3
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• pp.351-358
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• 2014

Pumpkin seed oil (PSO) was investigated for its parasite elimination activity and efficacy in treating disorders of the prostate gland and urinary bladder. We confirmed the composition of PSO and identified its ability to improve vessels. Gas chromatography coupled with mass spectrometric (GC-MS) system was used for PSO composition analysis. Cytotoxicity and cell proliferation were confirmed by Cell Counting Kit-8 (CCK-8) assay. Nitric oxide(NO) production was measured with Griess reagent, and intercellular adhesion molecule (ICAM)-1 and vascular cell adhesion molecule (VCAM)-1 mRNA expression levels were measured by reverse transcription polymerase chain reaction (RT-PCR). As a result, PSO revealed the presence of several components such as linoleic acid, oleic acid, palmitic acid and stearic acid. Cytotoxic effects of PSO were not observed, and PSO increased nitric oxide production in human umbilical vein endothelial cells (HUVEC). Additionally, TNF-${\alpha}$-induced cell proliferation and ICAM-1 expression in HUVEC were inhibited by PSO treatment, whereas VCAM-1 expression was not significantly reduced. Taken together, these results show that PSO is worthy of study as a candidate food material for improvement of vascular disease.

• Journal of the Korean Society of Food Science and Nutrition
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• v.39 no.5
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• pp.731-736
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• 2010

The purpose of this study was to evaluate selected functional compounds and biological activities of 11 different pepper cultivars grown in rain-shelter and field. The selected compounds were capsaicinoids, polyphenolic and vitamin C. Antioxidant activities were measured by ABTS radical scavenging activity, reducing power and metal chelating effect. Antiproliferative activity was assessed by the measurement of the inhibition of HCT116, MCF 7 and NCI-H460 cancer cell proliferation. The contents of capsaicin, dihydrocapsaicin, polyphenolics and vitamin C from 11 cultivars grown in field were 0.0~268.3 mg/100 g, 0~55.1 mg/100 g, 635~878 mg/100 g and 4.1~8.2 mg/g, respectively. There were significant differences in the content of selected compounds among the cultivars, although no significant difference in rain-shelter and field was detected. Similar to the results from the selected compounds, there was no difference in antioxidant and antiproliferative activities between rain-shelter and field. This research provides basic information on functional compounds and biological activity of cultivation methods and pepper cultivars.

• Journal of the Korean Society of Food Science and Nutrition
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• v.37 no.9
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• pp.1095-1100
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• 2008

Antioxidative and macrophage phagocytic activities and contents of functional component in selected Korean chestnuts (Dantaek, Daebo, Okkwang, Seokchu, Byunggo) were evaluated. Coumarin, gallic acid and catechin in inner skin and whole kernel of selected Korean chestnuts were detected by HPLC. The predominant functional components in inner skin of chestnut were catechin, followed by gallic acid and coumarin. However, the whole kernel had only gallic acid. Thus, the antioxidant properties of gallic acid and catechin were evaluated through DPPH radical-scavenging activity and SOD like activity. Gallic acid and catechin at 6.0 mg/100 g exhibited 69.4% and 38.3% of scavenging activities on DPPH radical, respectively. DPPH radical-scavenging activity of gallic acid increased in a concentration-dependent manner. Gallic acid was found to possess higher DPPH radical-scavenging activity than equivalent amount of catechin at all concentrations, whereas catechin was found to have higher SOD like activity than gallic acid. In addition, pre-incubation of macrophage with white kernel extract from Byunggo resulted in a significant increase of phagocytic activity and yellow kernel extracts from Byunggo, Dantaek, Daebo and Okkwang, leading to an increase in phagocytic activity compared with untreated cells. Yellow kernel extracts was found to have higher phagocytic activity than white kernel extracts. Byunggo had the highest phagocytic activity. The results suggest that the Korean chestnut may provide a natural source of antioxidants and active immunity.

• Korean Journal of Food Science and Technology
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• v.38 no.4
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• pp.506-512
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• 2006

We investigated changes in the physicochemical characteristics and functional components of the Saengsik cereal grains-milled rice, brown rice, glutinous rice, and barley- by washing with electrolyzed water. There were no changes in the composition of all cereal grains that was dried with hot-air and freeze-dried after being washed with electrolyzed water. The L and a values were not affected by drying in milled rice, brown rice, glutinous rice, or barley, but the b value increased in milled rice and glutinous rice-this increase was greater with hot-air drying than with freeze-drying. The dietary fiber content of the all cereals increased with hot-air drying. The niacin content decreased in all cereals; the extent of this change was greater with hot-air drying than with freeze-drying. The ${\beta}-glucan$ content of barley was higher in samples that underwent freeze-drying than in those treated by hot-air drying, but was not affected by washing with electrolyzed water. Thus, other than a change in color for milled and glutinous rice, no changes in the physicochemical characteristics and functional components these products were observed with freeze-drying. Data indicate that the electrolyzed water washing could be effectively used as pasteurization step in the uncooked cereal grains.

• Journal of Life Science
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• v.28 no.11
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• pp.1285-1289
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• 2018

Soybean [Glycine max (L.) Merr.] seed is an important dietary source of protein, oil, carbohydrates, isoflavones, and other nutrients for humans and animals. But, antinutritional factors in the raw mature soybean are exist. Kunitz trypsin inhibitor (KTI) protein and stachyose are main antinutritional factors in soybean seed. The genetic removal of the antinutritional factors will improve the nutritional value of soybean seed. The objective of this research was to breed a new yellow soybean strains (rs2rs2titi genotype) with the traits of lacking of KTI protein and low content of stachyose. Breeding population was developed from the cross of "Jinyangkong" and 15G1 parents. Presence or absence of KTI protein was detected based on Western Blot technique. Content of stachyose in mature seed was detected by HPLC. Total four new strains (603-1, 603-2, 625, and 694) with KTI protein free and low content of stachyose were selected. Four strains (603-1, 603-2, 625, and 694) have yellow seed coat and hilum. Plant height of 603-1 strain was 65 cm and 100-seed weight was 29.2 g. Plant height of 603-2 strain was 66 cm and 100-seed weight was 26.2 g. Plant height of 625 strain was 64 cm and 100-seed weight was 27.1 g. Content of stachyose for four new strains was 3.0~3.50 g/kg. Four strains selected in this research will be used to improve new yellow soybean cultivar with KTI protein free, and low content of stachyose.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.37 no.4
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• pp.337-345
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• 2011

In this report, we have investigated the functional properties change of phytochemicals by the encapsulation using water soluble host, ${\beta}$-cyclodextrin. The cream, shampoo, bodywash, and hair tonic containing phytochemical supramolecules were produced by mixing the surfactants, fragrances and the oriental herbal extracts encapsulated with ${\beta}$-cyclodextrin. Shampoo and bodywash including the encapsulated phytochemicals exhibited anti-growth activity against Gram (+) and Malassezia furfur which is known to cause dandruff. In cytotoxicity test against HDF (human dermal fibroblast), we could not detect any toxicity when the supramolecules content was less than 1 mg/mL. Our results suggest that the supramolecule of ${\beta}$-cyclodextrin with phytochemicals could be a safe anti-bacterial agent for cosmeceuticals.

• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2012.03a
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• pp.69-69
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• 2012

지구상에는 약 40만 종의 식물이 존재하는 것으로 알려져 있으며 이 중에 는 질병의 치료를 위한 약재로 이용되거나 나무는 대부분 목재 등으로 이용된다. 향나무(Juniperus chinenesis L.)는 항균성 및 방충성이 뛰어난 상록수로서 목재는 조각재나 가구재로 사용되고 민간 및 한의학에서 다양한 증상의 약재로 쓰이고 있으며 부패한 냄새를 제거할 목적이나 향재 및 향료로도 쓰이고 있다. 열매의 정유성분은 화장품, 술, 캔디 등에 사용되며 cedrol은 향료보류제, 유분은 훈향료, 목부는 고혈압, 곽란, 심복통, 통기파혈에 쓰인다. 향나무는 폴레페놀 성분이 함유되어 있고 피톤치드가 많이 나오는 것으로 알려져 있으며 심재의 폴리페놀 화합물은 항암, 항균, 항알러지, 노화방지 및 심장질환 등을 예방하거나 지연시키는 등 광범위한 약리학적 활성을 나타내어 식품, 의약품, 화장품, 향료등 다양한 분야에 활용되고 있다. 향나무 추출물에 관한 연구로는 성분분석과 생리활성 등에 관한 의약학 분야의 다양한 연구와 항산화, 항균활성 등 약리작용에 연구가 최근 다양하게 이루어지고 있는 것을 볼 수 있다. 측백나무속에 속하는 나무들은 대부분 정유 성분을 함유하고 있는 특성으로 항균성 등 바이오 기능성 소재 개발을 위한 연구가 활발히 진행되고 있으나, 향나무 추출물의 염색성에 관한 연구는 찾아보기 어려운 실정이다. 이에 본 연구에서는 다양한 용매를 이용하여 향나무의 잎, 열매, 수피, 심재 각 부위 추출물을 이용하여 견직물에 대한 염색성을 살펴봄으로써 향나무 추출물을 활용한 천연염색과 염재로서의 가능성을 확인하고자 하였다. 실험 결과 증류수를 염액 용매로 염색한 결과 모든 추출물의 잎, 열매 염색포의 색상은 대부분 옅은 Y계열로 나타났으며 향나무의 수피와 심재 염색포는 대부분 적색기미가 강한 YR계열로 나타났다. 에탄올 혼합액을 염액 용매로 하여 염색한 결과 향나무의 잎과 열매의 색상은 대부분 Y계열의 색상을 나타냈고 유기용매 추출염색포에서 정유성분으로 추정되는 물질 때문에 균염이 어려웠으며 수피와 심재 염색포에서 대부분 R계열의 색상이 뚜렷이 나타났다.

• Journal of Life Science
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• v.22 no.11
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• pp.1507-1514
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• 2012

Oxidative stress leads to damage in all components of the cell, including proteins, lipids, and DNA due to imbalance between reactive oxygen species production and cellular detoxification. Phytochemicals are well-known to contain antioxidants, and their physiological role has been intensively studied. The fruit of Cornus officianalis has been used in oriental medicine and has been reported to have many functions. In this study, four different extraction techniques were applied to extract functional components from the fruit of Cornus officianalis, and the content of loganin, which is an antioxidant having DPPH radical and hydrogen peroxide scavenging activity and reducing power, was analyzed in each extract. Extraction techniques employed in this study were heat extraction by water, 70% ethanol extraction, enzyme treatment, and combination of enzyme treatment and heat extraction by water. All extracts contained 11.8-18.0 mg/g loganin and showed antioxidation function assayed by measuring DPPH radical and hydrogen peroxide scavenging activity and reducing power. Among them, heat extraction was the most effective technique, showing a maximum amount of loganin (18.0 mg/g) and antioxidative activity at 100 mg/ml concentration. Each extract showed very low cytotoxicity up to at 500 mg/ml but 10-20% cytotoxicity at 1,000 mg/ml by in vitro MTT assay.