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저장온도와 저장시간에 따른 햄버거와 샌드위치의 품질 변화
최선강,이명섭,이경호,임대석,이광형,최경희,김창한 한국축산식품학회 1998 한국축산식품학회지 Vol.18 No.1
This study was carried out to evaluate of the microbial and sensory quality of ready-made hamburger and sandwich. Initial total plate count of hamburger for establishment A and B were 1.2$\times$102 cfu / g and 3.4$\times$102 cfu / g, respectively, and for establishment C was 7.9$\times$104 cfu / g. After 48 hour storage at 1$0^{\circ}C$, total plate count of hamburger for establishment A and B increased to 1.2$\times$104 cfu / g and 6.8$\times$103, respectively, and for establishment C increased to 1.2$\times$107 cfu / g. Initial total plate count of sandwich for establishment A and B were 3.2$\times$102 cfu / g 7.9$\times$102 cfu / g, respectively, and for establishment C was 1.1$\times$105 cfu / g. After 48 hour storage at 1$0^{\circ}C$, total plate count of hamburger for establishment A and B increased to 8.1$\times$103 cfu / g and 2.3$\times$104, respectively, and for establishment C increased to 4.4$\times$108 cfu / g. No E. coli, Salmonella, Vibrio, and Staphylococcus aureus were detected under simulated storage conditions. There was no significant changes in pH, acid value, and volatile nitrogen number under simulated conditions. In sensory evaluation of hamburger and sandwich, sensory score was lowered by increase of total plate count.
권순성,최선강,주두권,이진원,신세철,최혜림,오영선,성은수 한국산업식품공학회 2019 산업 식품공학 Vol.23 No.2
The antioxidant activity, total phenol content, and inhibitory effect of xanthine oxidase (XOase) for six different medicinal plant complexes such as Achyranthes japonica, Acanthopanax sessiliflorus, Carthamus tinctorius, Eucommia ulmides, Viscum album, and Caragana koreana were investigated in this study. The free radical scavenging activity values using DPPH(2,2'-diphenyl-1-picrylhydrazyl) and ABTS[2,2'-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt radical cation] analyses were found to be 532.03±86.60 μg/mL and 1376.50±35.01 μg/mL, respectively, in 95% of ethanol extracts among six medicinal plant mixed compositions (6MPMC). The total phenolic content in 70% ethanol extract of 6MPMC was 125.19±1.34 mg GAE/g. The inhibitory activity against XOase was highest at 33.20±0.17% in the 70% ethanol extract of 6MPMC. In the antimicrobial activity test of 6MPMC, the minimum inhibitory concentration (MIC) value showed activities against V. litoralis and E. coli in 70% and 95% ethanol extracts, and these two microorganisms were created in clear zones by method of paper disc diffusion. These results suggest that the 6MPMC, composed of Achyranthes japonica, Acanthopanax sessiliflorus, Carthamus tinctorius, Eucommia ulmides, Viscum album, and Caragana koreana, have both antioxidant and antimicrobial activities and, therefore, may serve as a functional health food product.
Pediococcus pentosaceus로 발효된 황기 지하부가 인간 피부 섬유아세포의 콜라겐 생성에 미치는 효과
이한나,고은지,최선강,유창연,성은수,임정대 한국약용작물학회 2018 한국약용작물학술대회 발표집 Vol.2018 No.05
Background: This study were to investigate the effect of Pediococcus pentosaceus fermented Radix astragali (AMRP) and non-fermented products (AMRNP) on collagen synthesis in the cultures of human dermal fibroblasts, and their inhibitory effects on the matrix-degrading enzymes (collagenase, elastase, and gelatinase). Methods and Results: Both AMRP and AMRNP significantly improved cell growth and proliferation of HDF cells. However, the enzyme-linked immunosorbent assay and Western blot analysis demonstrated that AMRP, but not AMRNP, significantly and dose-dependently stimulated the biosynthesis of type I procollagen in both aged (74 y) and young (21 y) HDF cells. Real-time reverse transcription-polymerase chain reaction revealed that expression of type I, type III procollagen and transforming growth factor β1 (TGF-β1) mRNA was significantly stronger in AMRP-treated HDF cells than that of AMRNP-treated and un-treated HDF cells. The AMRP revealed an increase in astragaloside Ⅳ only depending on increase in fermentation period, because other astragalside converted to astragaloside Ⅳ, which it detached acyl group by fermentation processing of Pediococcus pentosaceus. Conclusion: The results also suggested that AMRP could stimulate the collagen biosynthesis in human dermal fibroblasts, which is, associated with the regulation of procollagen biosynthesis resulting from AMRP-induced TGF-β1 expression and the mitogenic activity in HDF cells, and therefore, is expected to reduce the age-dependent loss of extracellular matrix proteins.
갯방풍 지상부 용매 분획물의 비표적 대사체 프로파일링 및 항산화 활성
김철중,전지형,최선강,유창연,이재근 한국약용작물학회 2022 한국약용작물학회지 Vol.30 No.2
Background: The soft petiole of the Glehnia littoralis shoot is used as a raw material for food. It contains specific ingredients such as polyacetylene and coumarin. However, basic research considering their safety verification, efficacy, and ingredient identification is needed. Methods and Results: In this study, GC/MS compound profiling and LC/UVD were performed to evaluate the antioxidant activity of G. littoralis shoot extract fractions, and to identify the compounds contained therein. Total phenol and flavonoid content as well as antioxidant activity were maximum in the ethyl acetate layer, and a significant correlation was confirmed between total phenol content and antioxidant activity. GC/MS compound profiling, revealed a total of more than 40 compounds, and active ingredients such as coumarin-based phellopterin unique to G. littoralis and polyacetylene-based falcarinol (panaxinol) were qualitatively analyzed. The highest coumarin content was found in the ethyl acetate layer. Conclusions: In this study, the antioxidant activity and compounds contained in the shoot (soft petiole) fractions of G. littoralis were confirmed. These basic data may contribute to expanding the material value of G. littoralis in the future.
참당귀의 무기성분, 유리당, 아미노산 및 지방산 함량 특성
길현영,성은수,심재만,최선강,허권,유창연 한국약용작물학회 2015 한국약용작물학회지 Vol.23 No.6
Background : The major compounds of Angelica species are decursin, decursinol angelate, nodakenin, umbelliferone and β-sitosterol, which act anti-inflammatories, reduce pains, protect the liver and enhance the immune system. This study investigated the chemical compositions, minerals, metals, sugars and overall amino acid composition in Angelica gigas Nakai. Methods and Results : Powder of Angelica roots smaller than 30 mesh were used. Physico-chemical analysis revealed the presence of carbohydrates (62.0%), crude proteins (13.9%), moisture (11.4%), crude fats (7.3%) and ash (5.4%). Results showed that potassium was present in the highest amount (1,859 ppm), followed by magnesium (214.5 ppm), calcium (147.3 ppm) and sodium (6.0 ppm). Free sugar profiles showed the presence of sucrose (29.3 g/100 g). The total amino acids concentrations was 9,752 ㎎/ 100 g, the most common and dominant amino acids were arginine (2,181 ㎎/100 g), glutamic acid (1,212 ㎎/100 g) and aspartic acid (834 ㎎/100 g). The total free amino acids contents was 1,476 ㎎/100 g, in which the most common amino acid were arginine (932 ㎎/100 g), glutamic acid (127 ㎎/100 g), and γ-aminobutyric acid (80.4 ㎎/100 g). The fatty acid composition of A. gigas showed a higher concentration of unsaturated fatty acids such as linoleic acid (443.9 ㎎/100 g) and palmitic acid (181.3 ㎎/100 g) according to gas chromatography. Conclusions : These results showed that Angelica roots can be used in various fields of foods and medicines, and in the preparation of cosmetics.
< 구두-C-15 > Cellulose nanofibril (CNF) 강화 전분계 플라스틱 제조 및 특성 평가
박찬우,한송이,서푸른나래,최선강,이선영,이승환 한국목재공학회 2018 한국목재공학회 학술발표논문집 Vol.2018 No.1
전분의 열 가소화를 통해 제조되어지는 thermoplastic starch (TPS)는 원자재 공급이 용이하고 생분해성을 지니고 있어 환경적으로 높은 가치를 지니고 있다. TPS는 전 세계 바이오매스시장의 약50%를 차지하고 있으며, 차세대 열가소성 복합재료로써 매우 각광받고 있다. 그러나, TPS는 취성과 흡습성이 높으며, 다른 열가소성 고분자에 비해 상대적으로 낮은 강도적 특성을 지니고 있다. 이러한 특성은 TPS의 응용 확대 및 상업화 발전에 단점으로 작용하고 있다. 따라서, 본 연구에서는 lignocellulose nanofibril (LCNF), holocellulose nanofibril (HCNF), pure cellulose nanofibril (PCNF)를 강화필러로써 첨가하여 CNF 강화 TPS 복합재료를 제조하고, 물리·역학적 특성을 평가하였다. 전분/글리세롤 (75/25)에 50phr의 CNF를 첨가하여 마스터배치를 제조한 후, 이축압출기에서의 용융혼련을 통한 열가소화를 실시하였다. 제조된 복합재료의 절단면에서는 전분의 재결정으로 인한 hyphae형 패턴이 나타났으며, CNF 함량이 증가할수록 응집된 CNF 파티클이 존재하여 거친 단면을 보였다. HCNF 강화 복합재료의 인장강도 및 탄성계수가 가장 높게 나타났으며, LCNF 첨가시 가장 낮게 나타났다. 모든 샘플에서 CNF 함량이 증가할수록 복합재료의 인장강도와 탄성계수가 증가하였으며, 신장률은 감소하였다.