• 한국식품조리과학회지
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• 제26권4호
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• pp.381-389
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• 2010

본 연구는 매생이 분말의 첨가량을 3~7%로 달리하여 쿠키를 제조한 후 쿠키의 이화학적 품질특성 및 저장기간 중 지질산화효과를 측정하였다. 반죽의 밀도는 대조군과 매생이 첨가군간에 차이가 없었으나 반죽의 pH는 매생이 분말의 첨가량에 증가함에 따라 유의적으로 감소하였다. 쿠키의 퍼짐성은 대조군에 비해 3%군과 5%군은 유의적으로 높았으나 7%군은 유의적으로 낮게 나타났다. 손실율은 대조군과 7%군은 차이가 없었으나 3%와 5%군은 대조군에 비해 유의적으로 낮게 나타났다. 팽창율은 매생이 분말 첨가량이 증가함에 따라 유의적으로 감소하였다. 쿠키의 조직감은 대조군과 3%군과는 차이가 없었으나 5%와 7%군은 대조군에 비해 유의적으로 높게 나타났다. 색도의 경우 명도는 매생이 분말의 첨가량이 증가할수록 유의적으로 낮게 나타났으며, 녹색도는 대조군에 비해 매생이 첨가군에서 높게 나타났다. 황색도 역시 대조군에 비해 매생이 분말의 첨가량이 증가할수록 유의적으로 낮게 나타났다. 쿠키의 관능평가 결과 색은 대조군에 비해 3%군과 7%군은 유의적으로 낮게 나타났으며, 촉촉함 정도에서는 대조군에 비해 7%군에서 유의적으로 높게 나타났다. 쿠키의 무기질 함량은 대조군에 비해 매생이 첨가 쿠키에서 측정한 모든 무기성분이 높게 나타났다. 저장기간 중 매생이 분말 첨가 쿠키의 산가와 과산화물가는 대조군에 비해 매생이 첨가군에서 모두 낮게 나타났으며 특히 5%군에서 가장 낮게 나타났다. 이러한 연구결과를 볼 때 해조류인 매생이를 이용하여 쿠키를 제조할 수 있을 뿐 아니라, 특히 매생이 분말 5% 첨가군이 산패 억제에 효과가 있으므로 적절한 양의 매생이 분말을 첨가한 쿠키가 일반 쿠키에 비하여 저장기간을 증가시킴을 알 수 있었다.

• 한국식품영양학회지
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• 제30권1호
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• pp.19-30
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• 2017

In this study, the quality characteristics of noodles containing different amounts of germinated black quinoa were investigated. The powder of black quinoa with the highest antioxidative activation was selected; and composite flour was prepared with 0%, 5%, 10%, 15%, and 20% of germinated black quinoa powder to produce the noodles. We evaluated the quality and sensory characteristics of the noodles, including pH, salinity, water absorption rate, volumetric expansion rate, turbidity, chromaticity, extensibility, and texture. With regards to the quality characteristics of noodles with added germinated black quinoa, the pH and salinity decreased with increasing percentage of added germinated black quinoa (p<0.001). Increasing the percentage of added germinated black quinoa resulted in decreased water absorption (p<0.01) and volumetric expansion rates and increased turbidity of the cooked noodles (p<0.001). In terms of the chromaticity, L and b values decreased and a value increased with the increasing percentage of added germinated black quinoa (p<0.001). For the texture, hardness (p<0.001), adhesiveness (p<0.01), springiness (p<0.01), chewiness (p<0.001), gumminess (p<0.001), and cohesiveness (p<0.05) decreased as the percentage of added germinated black quinoa increased; while extensibility (p<0.001) increased. Consumer testing results indicated that the noodles with 15% of added germinated black quinoa showed the best results. Collectively, the evaluation of quality characteristics and consumer acceptability indicated that adding 15% of germinated black quinoa to produce noodles is optimal.

• 한국식품영양과학회지
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• 제45권9호
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• pp.1338-1343
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• 2016

본 연구는 기능성 소재로서 레드 렌틸 분말의 이용 가능성을 알아보기 위해 렌틸 분말을 밀가루 대비 0, 15, 30, 45% 첨가하여 제조한 국수의 품질 특성을 평가하였다. 레드 렌틸 분말 첨가가 증가함에 따라 국수의 중량, 부피, 수분흡수율, 탁도는 증가하였다. 색도는 레드 렌틸 분말의 첨가량이 증가할수록 L값은 감소하고 b값과 a값은 증가하는 결과를 나타내었다. 물성은 레드 렌틸 분말 첨가량이 증가할수록 경도, 탄력성, 응집성, 검성 및 씹힘성은 감소하였고 부착성은 증가하였다. 레드 렌틸 분말 첨가량이 증가할수록 DPPH 라디칼 소거능과 폴리페놀 함량은 증가하였다. 관능검사 결과 레드 렌틸 분말 45% 이상 첨가할 시 관능적인 선호도를 떨어뜨리는 것으로 나타나 레드 렌틸 분말을 30% 첨가하여 국수를 제조하는 것이 가장 최적 첨가량인 것으로 생각된다.

• 한국약용작물학회지
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• 제27권1호
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• pp.9-16
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• 2019

Background: Various Schisandra chinensis (SC) varieties grow in diverse regions in Korea. However, there is no valid scientific evidence of these varieties. This study aimed to select the excellent resources in terms of the growth characteristics, antioxidant activities, and analysis of the active compounds of the SC collection. Method and Results: In total, 154 resources of SC were collected from various regions of Korea. The growth characteristics were measured by the number of fruit bunches, fruit number, and weight of 100 fruits. The antioxidant activities were investigated by analyzing the total flavonoid and total polyphenol contents and the radical scavenging activity of DPPH and ABTS. Schizandrin A, schizandrin c, gomisin a, and gomisin N were analyzed by HPLC. Each resource showed different growth characteristics. Among the antioxidative effects, the highest 20 resources showed high antioxidant activities in selected 29 resources. Analysis of the SC lignan index showed that all resources contained more than 1.16% of active compounds. Conclusions: All of the selected 29 SC resources were shown to have excellent growth characteristics, antioxidant activities, and bioactive compound richness. Especially, SC-004, SC-007, and SC-154 showed the best growth characteristics, and SC-22, SC-40, and SC-45 showed the best antioxidant activities and bioactive compound richness.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2000년도 춘계학술발표대회
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• pp.169-172
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• 2000

Studies on extraction of red pigment was performed to provide the basic information for the utilization of red pigment as s new source of natural food colorant. A bacterium isolated from marine resources were carried out the test for excretion of red pigment. One strain of a marine bacterium, KSR-97 showed a high production of red pigment on the medium of colloidal chitin, peptone-yeast extract with minerals. In physicochemical and sensory properties in aqueous solution of red pigment was investigated at various condition of pH, temperature, concentration of ethanol and stability of storage. Potent antioxidative of red pigment was separated by thin layer chromatograpy, silica gel chromatography and reverse high performance liquid chromatography using ODS hypersil column.

• 한국식품영양학회지
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• 제30권6호
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• pp.1229-1234
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• 2017

This study was carried out to investigate the changes in the antioxidant activity of Cheonggukjang with the addition of hazelnut. The number of Bacillus subtilis and the content of crude fat were increased with the addition of hazelnut. The addition of hazelnut made the color of Cheonggukjang lighter. The flavonoid and polyphenol content were sharply increased in proportion to the addition of hazelnut. The DPPH radical scavenging activity of Cheonggukjang was also increased with the addition of hazelnut. Taken together, it was found that the addition of hazelnut had a positive influence on Cheonggukjang by increasing the antioxidant activity.

• Food Science and Biotechnology
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• 제16권3호
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• pp.489-492
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• 2007

We investigated the antioxidant activity of ethanol extracts obtained from the flowers of Elsholtzia splendens on Chinese hamster ovary CHO-K1 cells. When cells were treated with E. splendens extracts (ESEs), low concentrations (<12.5 ug/mL) of stimulated cell proliferation via radical generation. Relative mRNA expression of Cu/Zn-superoxide dismutase (SOD) and Mn-SOD in cells exposed to ESEs (1-20 ug/mL) was significantly induced in a dose-dependent manner (p<0.05). In the case of catalase, ESEs had opposing effects; that is, a low-level treatment caused a decrease, and a high-level treatment induced elevated levels (p<0.05). The results demonstrated that components of ESEs exhibit potential antioxidant properties. Also, further studies are required to clarify the active components of Elsholtzia splendens extracts responsible for such biological activities.

• 한국식품영양학회지
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• 제20권4호
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• pp.406-413
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• 2007

LOHAS(Lifestyles Of Health And Sustainability) drinks were prepared by the addition of mulberry leaf powder(MLP) at various levels(0%, 5%, 10% and 20%). Their characteristics of the drinks were examined according to antioxidant activity and sensory evaluation. In the sensory evaluation, there was no significant difference between the control group(0% MLP group) and 5% MLP group for overall quality. For the proximate compositions of the LOHAS drinks, moisture, crude ash, crude protein and crude fat were all increased as the ratio of MLP increased. For the mineral contents, the amounts of calcium and magnesium were increased, but sodium, according to adding levels of MLP.

• Journal of Applied Biological Chemistry
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• 제44권2호
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• pp.71-76
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• 2001

Methanol extract and solvent fractions of Aster scaber Thunb. were tested to elucidate antioxidative characteristics in vitro. Methanol extract showed strong inhibition on linoleic acid autoxidation and conjugated diene production. Hexane and diethyl ether fractions showed stronger chelating effect on $10^{-4}M\;FeCl_3$ than the other fractions. Butanol fraction had the strongest capacity on $10^{-3}M\;CuSO_4$ similar to ${\alpha}$-tocopherol. Synergistic effect of butanol fraction with histidine, methionine, and lysine on linoleic acid autoxidation had been observed. Contents of total phenol, vitamin E, vitamin C, and carotenoid were evaluated. From the results, Aster scaber Thunb. could be expected to play a role as an antioxidant in vivo.

• Preventive Nutrition and Food Science
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• 제14권1호
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• pp.60-65
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• 2009

Cookies were prepared by adding different levels (0, 5, 10, 15, and 20%) of purple sweet potato powder (PSPP) and their physicochemical and sensory characteristics were examined. With increase of the PSPP level, moisture content decreased and ash content increased (p<0.05). The spread factor of control cookies was higher than that of cookies containing PSPP. The incorporation of PSPP in cookies lowered the lightness and yellowness but increased redness (p<0.05). Texture measurement showed that the addition of PSPP did not affect the hardness of cookies. Results of acceptance test revealed that overall acceptability score was not significantly different between the control and the PSPP added cookies. Therefore, it is suggested that PSPP can be incorporated into cookies up to 20% without affecting the cookie quality. Total polyphenol content and antioxidant activity were assessed to examine the functionality of cookies. In addition, substitution of wheat flour with PSPP yielded cookies with higher polyphenol content and antioxidative activity (p<0.05). The peroxide value (POV) and acid value increased during storage at $60^{\circ}C$ for 80 days. The POV was significantly lower in cookies containing PSPP than the control cookies, suggesting that the addition of PSPP deterred the lipid oxidation (p<0.05).