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        검색결과 213

        41.
        2017.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purpose of this study was to evaluate the antioxidant and anti-adipogenic activities of Ligularia stenocephala (L. stenocephala) extract. The contents of the total polyphenol of the extract was 55.950 mg GAE/g residue. Antioxidant activities of L. stenocephala were evaluated by free radical scavenging ability and a reducing power test. 2,2'azino-bis- (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and α-α-diphenyl-β-picrylhydrazyl (DPPH) free radical scavenging activities of the extract were approximately 90% and 70%, respectively. Reducing power of the extract was 258.833 mg TE/g residue. The anti-adipogenic activity of L. stenocephala extract was examined in 3T3-L1 cells. During adipocyte differentiation, the 3T3-L1 cells were treated both with and without the extract. L. stenocephala extract suppressed the lipid accumulation in a concentration-dependent manner in the 3T3-L1 cells. The L. stenocephala extract inhibited the expression of peroxisome proliferator activated receptor γ (PPARγ) and adipocyte protein 2 (aP2) proteins, compared with control adipocytes. These results indicate that L. stenocephala could be regarded as a potential source natural antioxidant and an anti-obesity agent.
        4,000원
        43.
        2017.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was conducted in an effort to investigate the effect of Maillard reaction products (MRPs) on enzymatic browning of burdock and their anti-oxidant activity. The MRPs were prepared by heating glucose and amino acids at 90°C, which served to produce a strong inhibitory effect on burdock polyphenol oxidase. As the reaction time of the solution containing glucose and amino acid increased at 90°C, the production of MRPs increased and intensity of the brown color deepened. When MRPs were prepared by heating at 90°C for five hours, the absorbance of MRPs from glucose and lysine was 6.44, while those of glucose and glycine was 1.95. The MRPs synthesized from the glucose and lysine also reduced the pH of MRPs from 5.60 to 4.51, but those from glucose and glycine decreased slightly from 5.57 to 5.33. The Michealis-Menten constant value (Km) of burdock PPO with pyrocatechol as a substrate was 16.0 mM, and MRPs were a non-competitive inhibitor against burdock PPO. The anti-oxidant activity of MRPs was measured by evaluating its radical scavenging activities of DPPH radicals, ABTS radicals and reducing power. The color intensity of MRPs produced by lysine and glucose were deeper than that produced by glucose and glycine. It was also found that MRPs produced from glucose and lysine exhibited stronger anti-oxidant properties than those produced by glucose and glycine.
        4,000원
        44.
        2017.10 구독 인증기관·개인회원 무료
        The insects have been investigated as novel sources for foods and biomaterials in several recent studies. However,its effects on hair growth have not been sufficiently researched. To develop novel and natural materials for preventingalopecia and promoting hair growth, we investigated the antioxidant activity and hair growth promoting effect of Tenebriomolitor larvae extract (TME). As a result, DPPH radical scavenging activity was 81.17%, and nitrite scavenging activitywas 43.69%, which were similar to blueberry extract. And TME promoted the proliferation of human DPCs and NIH3T3cells, concentration dependently. In addition, the TME prevented not only DHT-induced DPCs cytotoxicity but also actionof TBM as a potassium channel blocker in NIH3T3 cells. These results suggest that TME can be used as a functionalmaterial for alopecia therapeutic reagent by preventing hair loss and promoting hair growth.
        45.
        2017.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was conducted to investigate the effects of alpha-lipoic acid (aLA) as an antioxidant that decrease the reactive oxygen species (ROS) in bovine embryonic development. Slaughterhouse derived bovine immature oocytes were collected and 4 different concentrations (0, 5, 10 and 20 mM) of aLA was supplemented in bovine in Vitro maturation (IVM) medium. After 20 hrs of IVM, maturation rates, levels of ROS and glutathione (GSH), and further embryonic development after parthenogenetic activation (PA) and in Vitro fertilization (IVF) was investigated according to aLA concentrations. Maturation rate was significantly higher in 10 mM group than other groups (80.5% vs. 62.9, 73.9, 64.2%; P<0.05). In the levels of ROS and GSH in matured oocytes as an indicator of oocyte quality, significantly better results were shown in 5 and 10 mM groups compared with other 2 groups. After IVM, significantly higher rates of blastocyst formation were shown in 10 mM groups in both of PA (27.9% vs. 18.8, 22.3, 14.2%; P<0.05) and IVF (32.6% vs. 23.9, 27.3, 16.2%; P<0.05) embryos. In addition, significantly more cell total cell number and higher inner cell mass ratio in 10 mM PA and IVP blastocysts showed developmental competence in 10 uM groups. Therefore, based on the entire data from this study, using 10 μM of aLA confirmed to be the optimal concentration for bovine oocyte maturation and embryonic development.
        4,000원
        46.
        2017.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        An agricultural waste, pomegranate (Punica granatum L.) peel is known to be rich in total phenolics, which are flavonoids having strong antioxidant effects. In this study, pomegranate peel sponge cakes were prepared with varying ratios of freeze dried pomegranate peel powder (0, 1, 3, 5, 7% (w/w)) to examine their effect on quality characteristics, retrogradation and antioxidant activities. The specific gravity and moisture contents of 3, 5, and 7% pomegranate peel powder showed higher values than the control and 1% group. Addition of pomegranate peel powder increased the batter yield, while there was a significant decrease in baking loss. Increasing pomegranate peel powder content significantly decreased the lightness (L) (from 75.03 to 57.04) and pH values, whereas redness (a), yellowness (b) and ΔE were increased. Increasing concentration of the peel powder also increased the hardness and chewiness, while the springiness and cohesiveness decreased. Considering the Avrami equation, Avrami exponene (n) decreased from 1.8055 (control) to 0.9199 (7% pomegranate peel powder). Time constant (1/k) was lowest in control (at 17.64) and highest in the 7% group (39.84). Total polyphenol, flavonoid content, DPPH and ABTS radical scavenging activities significantly increased with increments in the content of pomegranate peel powder. A sensory evaluation by the 7-point scaling method showed that the sponge cake containing 7% pomegranate peel powder had the highest scores in color, flavor, sweetness, chewiness and overall acceptability. Hence, it is considered that sponge cake supplemented with 7% pomegranate peel powder is the most appropriate for quality characteristics, retrogradation and antioxidant activities.
        4,500원
        47.
        2017.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        치자(Gardenia jasminoides Ellis fructus, GJE) 씨에서의 70% 에탄올, CM (chloroform: methanol, 부피 비 2:1(CM)) 및 노르말 부탄올 추출 용매별 flavonoid 함량 및 항산화 능, 금속 킬레이 트 능력 측정을 통하여 치자 씨의 기능성 식품 소재로서의 가치를 검토한 결과, 치자 씨의 proanthocyanidin 함량은 건조 무게(g) 중 카테킨(catechin) 당량으로 계산하여 70.035±0.772 mg으로 나타났으며, 추출 수율은 CM (36.39%), 70% 에탄올(27.32%), 노르말 부탄올(26.23%) 순으로 나타났 다. 추출 용매별 항산화 능은 농도(0.2, 0.4, 0.6 mg/mL)가 증가할수록 유의적으로 증가하였으며 (p<0.05), 양성대조군으로 사용된 ascorbic acid, butylated hydroxyanisole (BHA), ethylenediamnetetraacetic acid (EDTA) 보다는 낮은 활성이 확인되었다. Flavonoid 함량(mg)은 시료 g 당 케르세틴(quercetin) 당량으로 계산하여 70% 에탄올(0.830), CM (0.752), 노르말 부탄올(0.105) 순 으로 확인되었으며, 항산화 능 분석 실험과 금속 킬레이트 능력 실험에서도 이와 유사한 양상으로 동정 되어 모든 분석에서 70% 에탄올과 CM 추출물이 강한 생리활성을 나타내었다. 따라서 치자 씨의 용매 별 flavonoid 함량에 따라 항산화 능 및 금속 킬레이트 능력이 증가하는 것으로 관찰되었다. 이에, 치자 씨는 proanthocyanidin과 flavonoid 화합물을 다량 함유하고 있으며, 높은 항산화 능 과 생리활성을 가 지고 있어 기능성 식품 및 천연 항산화제로서의 가치가 있을 것으로 추정된다.
        4,000원
        48.
        2017.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구에서는 약용식물 추출물을 함유한 숙취해소 음료가 항산화 및 알코올 분해에 미치는 영향을 조사하기 위하여, 약용식물 추출물의 총 페놀성화합물 함량, 총 플라보노이드 함량 및 DPPH radical 소거활성 및 ALDH(aldehyde dehydrogenase) 활성을 측정하였고, 약용식물 추출물을 함유한 숙취해소 음료의 복용이 음주 후 호흡 중 알코올 농도에 미치는 영향을 조사하였다. 항산화활성은 빼빼목 추출물 에서 높은 수치(total phenolic compound 97.5.6mg/g, total flavonoid 306.5mg/g, DPPH radical 소거능 80.1%)를 나타냈으며 Acetaldehyde(ALDH)에 대한 활성은 헛개 및 울금 추출물에서 306% 및 292%로 가장 높은 활성을 나타내어, 헛개 및 울금 추출물이 ALDH 제거에 효과적인 것으로 나타났다. 헛개 및 울금 추출물이 함유된 숙취해소 음료를 이용하여, 임상실험을 실시한 결과, 시간경과에 따라 대조군에 비해 숙취해소음료 섭취군에서 알코올 농도가 감소되는 경향을 나타냈으며 흡연자에 비해 비 흡연자가, 남성에 비해 여성에게 숙취해소 음료의 섭취가 더 효과적인 것으로 확인되었다.
        4,000원
        49.
        2017.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was carried out to compare the cooked and antioxidant characteristics with of cooked mixed grain rice with an addition rate (0, 5, 10, 15 and 20%) of proso millet and various cooking methods. Mixed grain rice with added proso millet was cooked by general and high pressure cooking methods with and without fermented alcohol. All pasting characteristics, except for breakdown viscosity, decreased with increasing the amounts of proso millet. Water binding capacity and swelling power significantly decreased when increasing the amounts of proso millet, however the water solubility index significantly increased. The palatability characteristics of rice with added proso millet showed similar results to rice without proso millet. Total polyphenol contents of rice with 20% proso millet and fermented alcohol added, cooked by general and high pressure cooking methods, were 184.33±2.69 and 179.80±5.22 μg GAE/g, respectively. Total flavonoid contents increased as amounts of proso millet increased. DPPH radical scavenging activities with and without proso millet added were 4.20~7.50 and 2.97~5.19 mg TE/100 g, respectively. ABTS radical scavenging activities with and without proso millet added were 14.36~27.92 and 14.07~15.83 mg TE/100 g, respectively. In this study, cooked and antioxidant characteristics of cooked mixed grain rice with added proso millet were expected to be used as basic data for manufactured processed products.
        4,000원
        50.
        2017.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The present study was aimed to determine the effect of green tea extract (GTE) and beta-mercaptoethanol (β-ME) supplementation in boar sperm freezing extender on sperm motility, viability and reactive oxygen species (ROS) level. Experimental groups were allocated into Lactose-egg yolk (LEY) without antioxidant (control), GTE (1,000 mg/L GTE in LEY) and β-ME (50 μM β-ME in LEY). Spermatozoa extended with LEY were cooled to 5°C for 3 h and then kept at 5°C for 30 min following dilution with LEY containing 9% glycerol and 1.5% Equex STM (final sperm concentration: 1 × 108/mL). Spermatozoa were loaded into straws and frozen in nitrogen vapor for 20 min. Following thawing at 37°C for 25 sec, sperm viability and ROS level were measured using fluorescent double stain Fertility® and cytometry, respectively. Motility and viability of GTE supplemented-group were higher than those of control and β-ME without significance. ROS level in GTE group showed significantly lower than control (P < 0.05). In conclusion, GTE supplementation in boar sperm freezing extender can reduce ROS generation during freezing.
        4,000원
        51.
        2017.02 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Antioxidant activities of 80% methanol, water, and 70% ethanol extracts of Lentinula edodes GNA01 were compared and estimated. The yield of Lentinula edodes GNA01 was identified to be in the following order: water>70% ethanol>80% methanol, but there was no significant difference between 80% methanol and 70% ethanol extracts. The highest total phenolic content (TPC) and total flavonoid content (TFC) were found in water extract, and TPC of 80% methanol extract was higher than that of 70% ethanol extract and TFC of 70% ethanol extract was higher than that of 80% methanol extract. Water extract exhibited the strongest DPPH, ABTS radicals, and nitrite scavenging activities, Fe2+ chelating ability, and FRAP among the three extracts. In addition, antioxidant activity of 80% methanol extract was higher than that of 70% ethanol extract in most of the experiments. As a result, antioxidant activity of Lentinula edodes GNA01 showed a difference according to extraction solvent and concentration; nevertheless, water extract exhibiting high polarity had the strongest antioxidant effect. Consequently, water extract from Lentinula edodes GNA01 is anticipated to be useful for the development of a high value-added functional product
        4,000원
        52.
        2017.02 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was performed to investigate the quality characteristics of Yanggaeng, including color, pH, total polyphenol contents, and antioxidant activities, with the addition of aged garlic extract (0, 3, 6, 9 or 12%), aged at low temperatures. Among the color characteristics, the lightness value decreased, and the redness and yellowness values increased, proportional to the amount of garlic extract concentrate added to Yanggaeng. The pH of Yanggaeng significantly (p<0.05) decreased according to the amount of aged garlic extract added. Total phenol contents of control (0% aged garlic extract added Yanggaeng) was the lowest, followed by 3, 6, 9, 12% aged garlic extract added to Yanggaeng (88.15, 118.39, 156.91, 208.79 mg/g, respectively). Antioxidant activities, such as DPPH and ABTS radical scavenging activity, significantly increased with increase in the aged garlic extract concentration. In the sensory evaluation for Yanggaeng, 6% aged garlic extract added to Yanggaeng had the highest score in taste, flavor, and overall acceptance. Based on these results, it is suggest that the addition of 6% aged garlic extract to Yanggaeng can be developed as a product for the elderly.
        4,000원
        53.
        2016.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구는 수박 접목묘의 활착에 미치는 상대습도의 영향을 알아보고자 수행하였다. 2품종(‘스피드’, ‘삼복꿀’)의 수박(Citrullus vulgaris Schrad.)을 ‘RS-동장군’ 박 대목(Lagenaria siceraria Stanld.)에 접목하고, 접목묘는 주간 25oC/야간 18oC, 광주기는 1일 16시간 기준으로 몰리어다이어그램을 따라 3수준의 상대습도, 95-96%[1.1-0.8(주간) 또는 0.8-0.6(야간) g·m-3수분부족분(VPD)], 97-98%[0.7-0.4(주간) 또는 0.5-0.3(야간) g·m-3 VPD], 또는 99-100%[0.3-0.0(주간) 또는 0.2-0.0(야간) g·m-3 VPD]로 유지하였다. 상대습도 처리 중 97-98% 처리는 대목과 ‘스피드’ 접수의 생체중과 초장을 가장 크게 증가시키며 접목 2일 후에 접합부의 연결을 향상시켰다. 그러나 ‘삼복꿀’의 경우 상대습도 99-100% 처리에서 경경과 초장이 증가하였다. 또한 상대습도 95-96%와 97-98% 처리에서 재배한 2 품종 모두 과산화수소가 덜 발생하고 산화적 스트레스의 지표인 항산화 효소의 활성이 덜 나타났다. 따라서 이 연구의 결과는 수박묘의 접목활착에 가장 적절한 상대습도는 97-98%였다.
        4,000원
        55.
        2016.11 구독 인증기관·개인회원 무료
        This study was conducted to investigate the effects of Kojongsi persimmon peels as a mushroom substrate on antioxidant activity of Pleurotus eryngii. The Pleurotus eryngii was growth on the medium with 0, 5, 10, 15, 20, 30, 40, 50% Kojongsi persimmon peels. The Pleurotus eryngii was extracted into ethanol and their antioxidant activities were analyzed. The total polyphenol content was highest in the 20% Kojongsi persimmon peels treatment (40±0.38 mg of gallic acid equivalents/100 g) than 0% Kojongsi persimmon peels treatment (21 ±0.18 mg of gallic acid equivalents/100 g). The 20% Kojongsi persimmon peels treatment showed better DPPH scavenging activity (36.81±0.23% at 1 mg/ml), ABTS scavenging activity (39.03±0.10% at 1 mg/ml) and reducing power (0.3±0.10% at 1 mg/ml) than 0% Kojongsi persimmon peels treatment and another extract ones. Overall, total polyphenol content and antioxidant activities of extracts from Pleurotus eryngii was increased dose dependently and 20% Kojongsi persimmon peels treatment was showed better total polyphenol content and antioxidant activities than 0% Kojongsi persimmon peels treatment and another extract ones.
        56.
        2016.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Lipoxygenase(LOX) 결핍 콩(05C4 및 LS, LOX2,3-free)과 일반콩(태광, LOX1,2,3-present)으로 제조된 된장의 급이가 고지방-콜레스테롤 식이성 흰쥐의 체내 지질성분 및 항산화 효소계에 미치는 영 향을 알아보고자 하였다. SD계 흰쥐는 정상군, 고지방-콜레스테롤 급이군(HFC), 고지방-콜레스테롤 식이+5% 된장 분말 급이군[HFC+D1, 태광된장; HFC+D2, 05C4된장; HFC+D3, LS된장)으로 구분하여 5주간 사육되었다. In vitro에서 된장의 콜레스테롤 흡착활성은 4mg/mL 농도에서 LS된장이 태광된장 에 비해 1.5배 높았다. 식이효율은 정상군에 비해 대조군에서 유의적으로 높았으며, LS된장 급이군 (HFC+D3)은 대조군에 비해 유의적으로 감소되는 경향이었다. Rö hrer 및 T.M.지수와 체지방 함량은 대조군에 비해 된장 급이군에서 모두 유의적으로 감소되었으며, 특히 Lee지수 및 BMI는 LOX 결핍콩 된장 급이군에서 유의적으로 감소되었다. 혈청 총 지질 및 중성지방 함량은 대조군에 비해 된장 급이군 에서 유의적으로 감소되었으나, 총 콜레스테롤, HDL-, LDL-콜레스테롤 및 심혈관질환 위험지수는 LS 된장 급이군만 유의적인 감소를 보였다. 혈청 AST 및 ALT 활성은 HFC+D1 및 HFC+D2간에는 유의차 가 없었고, HFC+D3은 HFC+D1 및 HFC+D2에 비해 유의적으로 낮은 수준이었다. 간 조직에서 총 지 질 함량은 HFC+D3이 대조군에 비해 약 25.2%의 감소되었으며(p<0.05), 중성지방 및 총 콜레스테롤 함량은 HFC+D2 및 HFC+D3이 대조군에 비해 유의적인 감소를 보였다. 분변 중의 중성지방 함량은 된 장 급이군 모두 대조군에 비해 26.2~40.3%의 증가를 보였으며(p<0.05), 총 콜레스테롤 함량은 LS된장 급이군만 유의적으로 증가하였다. 간 조직 중 SOD 활성은 대조군에 비해 05C4 및 LS된장 급이군에서 유의적으로 증가하였으며, catalase 및 GSH-px 활성은 된장 급이군 모두 대조군에 비해 유의적으로 증가하였다. UDPGT 활성은 된장의 급이 시 정상군과 유사한 수준으로 증가되었으며, 특히 LS된장 급 이군은 정상군에 비해 유의적으로 증가하였다. 따라서 LOX 결핍 콩으로 제조된 된장은 체내 지질 개선 및 항비만 활성에 긍정적인 도움이 될 것으로 판단된다.
        4,900원
        57.
        2016.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was conducted to assess the quality characteristics and antioxidant activity of Yanggaeng prepared with different concentrations of blackcurrant powder (0, 1.5, 3, and 4.5%). The moisture content ranged from 41.95% to 45.38%, exhibiting no significant differences between the groups. The pH gradually decreased with increasing levels of blackcurrant powder. The lightness (L) value decreased while redness (a) value increased with an increasing amount of blackcurrant powder. Hardness of the control group was lower than those of the treatment groups. Consumer acceptance test revealed no significant differences in surface color, smell, taste, and overall acceptability scores between the control and 3% added groups. The total polyphenol contents and total anthocyanin contents were 7.58~54.88 mg GAE/100 g and 0.00~4.20 mg C3G/100 g), respectively, which increased proportionally with increasing levels of blackcurrant powder. The antioxidant activity measured based on 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-azino-bis(3-ethylbenzothiazoline-6- sulfonic acid) (ABTS) radical scavenging activity and ferric reducing antioxidant power (FRAP) were significantly higher in treatment groups than the control and increased as the concentration of blackcurrant powder increased. From the above results, blackcurrant powder up to 3% can be incorporated into Yanggaeng to satisfy taste and functional needs for consumers.
        4,000원
        58.
        2016.10 구독 인증기관·개인회원 무료
        To increase the stability of anthocyanin from black rice, β-cyclodextrin (β-CD) formed a complex with anthocyanin, and thermal and UVB stability of the complex was investigated at various pH levels. The formation of β-CD complex with anthocyanin was confirmed by the decreased UV-Vis spectrophotometer absorbance (at 511nm) with increasing the concentration of β-CD at pH 2, 2.5, 3, 4, and 5. ABTS (2, 2’-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid)assay was conducted to measure radical scavenging capacity (RSC) of the complex at pH 2, 4, 6, and 8, after which the RSCs were recorded over the 24 h heating(95°C) and 24 h UVB irradiating periods. The RSC values of the complexes increased as the β-CD concentration increased (0.1-2%) at pH 6 and 8. Upon thermal treatment, the RSC readings of the complexes tended to decrease to a lesser extent compared to the anthocyanin control (without β-CD) at pH 2. This result suggests that the thermal stability of anthocyanin was more retained in the presence of β-CD at low pH (pH 2). However, in the case of UVB irradiation, the effect of β-CD complex on the anthocyanin RSC was not significant, though the RSC values for both the anthocyanin control and complexes trended downward as the UVB irradiation time increased at all pH ranges except for pH 8 (no downward trend). In short, this study suggests that the effect of β-CD complex on the stability of anthocyanin antioxidant capacity depends on pH and the susceptibility to the degradation process.
        59.
        2016.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구에서는 최대한 인삼의 외형을 원형삼 형태의 홍삼 과 유사하게 유지하면서도 기능성은 증진시킬 수 있는 신속 한 고온고압 처리 공정을 확립하기 위하여 다양한 고온고압 처리공정 조건에 따른 이화학적 성분 특성 및 항산화 활성 변화를 살펴보았다. 산성다당체 및 홍삼 특유의 진세노사이 드 Rh1, Rg2, Rg3의 함량은 140℃, 3 kg/cm2의 고온고압 처리 조건에서 가장 높은 반면, 총 페놀 화합물 및 말톨 함량은 156℃, 5 kg/cm2의 고온고압 처리조건에서 가장 높았다. 그러 나 홍삼의 증자 처리 시 156℃, 5 kg/cm2의 처리조건에서는 시 료가 터지거나 외형의 변형이 심하기 때문에 140℃, 3 kg/cm2를 최적 온도 및 압력으로 설정하였다. 한편, 증자 시간이 증 가함에 따라 총 페놀 화합물, 말톨 및 흑삼특이 진세노사이드 함량은 지속적으로 증가하는 경향을 나타내었으나, 20분간 처리한 군의 외형이 기존의 홍삼과 가장 유사한 외관을 나타 냈으므로, 140℃, 3 kg/cm2에서 20분 동안 증자 처리하는 것 을 본 실험의 최적 조건으로 설정하였다. 최종적으로 이러한 최적조건을 통해 제조된 홍삼의 항산화 효능을 분석한 결과, 시중에서 판매되는 백삼, 홍삼 및 흑삼과 비교하여 높은 항산 화 성분 및 항산화 활성을 나타냈다. 따라서 본 연구를 통해 확립된 고온고압 처리를 통한 신규홍삼 제조기술은 그 형태 가 기존의 홍삼 제품과 유사하면서도 공정이 신속하고, 품질 은 흑삼과 비슷한 고기능성 신규 인삼제품 개발 시 응용 가능 한 공정으로 사료된다.
        4,000원
        60.
        2016.06 구독 인증기관 무료, 개인회원 유료
        건강한 삶에 대한 현대인의 관심이 나날이 고조되고 있으며, 이에 따라 노화와 질병의 예방에 효과가 있는 항산화제의 연구가 활발히 이루어지고 있다. 특히 천연물이나 식품을 소재로 한 식이성 항산화제에 대한 연구는 꾸준히 증가하고 있는 추세이며, 천연물의 소재나 연구 분야의 폭이 매우 넓다. 본 연구는 고들빼기의 기능성 식품으로서 이용 가능성을 검토하기 위하여 동결건조 후, 각각의 용매(에탄올, 메탄올, 물)로 추출한 샘플을 DPPH radical 소거능, 아질산염 소거능, 총 페놀함량, 유기산 및 미생물함량을 측정하였다. 고들빼기 추출물에 대한 DPPH radical 소거능은 대체로 추출농도가 높아질수록 증가하는 경향을 보였고, 메탄올로 추출한 80% 희석액으로 추출했을 때 DPPH radical 소거능이 약 76.3%로 가장 높게 나타났다. pH가 증가함에 따라 아질산염 소거능은 감소하였고, 메탄올로 희석한 시료가 pH 1.2에서 77.8%으로 가장 높았다. 총 페놀 화합물 함량은 에탄올로 추출한 100% 희석액에서 76.7 mg GAE/g으로 가장 높았다. 고들빼기 김치의 유기산은 젖산, 구연산 순으로 높게 검출되었다. 저장기간이 길어질수록 총균수는 줄어들고, 유산균수함량이 증가하였다. 이러한 결과로 볼 때 고들빼기는 폴리페놀 함량이 풍부하고, DPPH, 아질산염 소거효과를 보여, 기능성 소재로서의 활용이 가능하리라 생각된다.
        4,000원
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