• Food Science and Biotechnology
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• 제16권4호
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• pp.549-556
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• 2007

The study was carried out to examine on the refiner discharge from Alaska pollock as a collagen resource by characterizing biochemical and functional properties of collagen. The refiner discharge from Alaska pollock surimi manufacturing was a good resource for collagen extraction according to the results of total protein, heavy metal, volatile basic nitrogen, collagen content, amino acid composition, and thermal denaturation temperature (TDT). TDT of acid soluble collagen from refiner discharge showed $20.7^{\circ}C$, which was similar to that of collagen from Alaska pollock muscle and was higher than that of collagen from Alaska pollock skin. TDT of acid-soluble collagen from refiner discharge was, however, lower than those of skin collagens from warm fish and land animal. Acid-soluble collagen from refiner discharge of Alaska pollock could be used as a functional ingredient for food and industrial applications according to the results of water and oil absorption capacities, and emulsion properties. In addition, if the thermal stability of the acid-soluble collagens is improved, collagen from refiner discharge from Alaska pollock could be more effectively used.

• 한국식품위생안전성학회지
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• 제27권4호
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• pp.461-465
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• 2012

본 실험에서는 여드름 치료에 사용되던 국소 레티노이드제와 항생제를 대용 할 수 있고 화장품에 사용되는 원료로 추출하여 항여드름 치료제 또는 화장품 원료를 개발하기 위해 실험한 결과 broccoli proplyeneglycol 그룹에서 DPPH, superoxide radical, nitric oxide assay 에서 모두 vitamin C에 가까운 활성을 나타내었고 paper disk diffusion test에서는 broccoli ethanol과 broccoli hexane 그룹에서 P. acne의 저해 활성을 나타낸 것으로 보아 항여드름 치료제 또는 화장품 원료로써의 유용 가치가 있다고 사료 되어진다.

• 한국축산식품학회지
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• 제43권1호
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• pp.184-194
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• 2023

Recently, interest in food-derived bioactive peptides as promising ingredients for the prevention and improvement of hypertension is increasing. The purpose of this study was to determine the structure and antihypertensive effect of an antioxidant peptide purified from velvet antler in a previous study and evaluate its potential as a various bioactive peptide. Molecular weight (MW) and amino acid sequences of the purified peptide were determined by quadrupole time-of-flight electrospray ionization mass spectroscopy. The angiotensin I-converting enzyme (ACE) inhibition activity of the purified peptide was assessed by enzyme reaction methods and in silico molecular docking analysis to determine the interaction between the purified peptide and ACE. Also, antihypertensive effect of the purified peptide in spontaneously hypertensive rats (SHRs) was investigated. The purified antioxidant peptide was identified to be a pentapeptide Asp-Asn-Arg-Tyr-Tyr with a MW of 730.31 Da. This pentapeptide showed potent inhibition activity against ACE (IC₅₀ value, 3.72 μM). Molecular docking studies revealed a good and stable binding affinity between purified peptide and ACE and indicated that the purified peptide could interact with HOH2570, ARG522, ARG124, GLU143, HIS387, TRP357, and GLU403 residues of ACE. Furthermore, oral administration of the pentapeptide significantly reduced blood pressure in SHRs. The pentapeptide derived from enzymatic hydrolysate of velvet antler is an excellent ACE inhibitor. It might be effectively applied as an animal-based functional food ingredient.

• 한국식생활문화학회지
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• 제21권5호
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• pp.550-558
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• 2006

We developed a kind of soy-based sauce for stews using three recipes and sensory evaluation processes, and examined the biological activities such as antioxidative, fibrinolytic and ${\alpha}$-glucosidase inhibitory activities of hot water extract of Cornus officinalis S. et Z in order to use as functional ingredient. The developed stew was composed of soy sauce $1\frac{1}{2}$ Tbsp, sugar $1\frac{1}{4}$ Tbsp, garlic, small green onion, powdered sesame and sesame seed oil $\frac{1}{2}$ tsp, respectively, ginger extract $\frac{1}{4}$ tsp, black pepper $\frac{1}{8}$ and water $\frac{2}{3}$C per 300 g of main ingredients(pork rib, chicken and dried pollack). It was evaluated more highly acceptable than the original recipes by sensory test. Replacement of water in the recipe of the developed stew sauce with hot water extract of Cornus officinalis S. et Z did' nt affect the sensory quality. From the above results. we concluded that hot water extract of Cornus officinalis S. et Z might be a excellent source to provide health functionality.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2022년도 추계학술대회
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• pp.93-93
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• 2022

Hovenia dulcis, one of the traditional medicinal plants, is currently being used as a functional ingredient for the development of health functional foods that protects the liver from alcohol damage in Korea. A variety of pharmacological effects of Hovenia dulcis have been reported so far, but studies on immune-enhancing activity are insufficient. Thus, in this study, we report that Hovenia dulcis branches (HDB) induce the activation of macrophages. HDB increased the production of immunostimulatory factors and phagocytosis in RAW264.7 cells. TLR4 inhibition blocked HDB-mediated production of immunostimulatory factors. In addition, the JNK inhibition reduced the HDB-mediated production of immunostimulatory factors, and the HDB-mediated JNK activation was blocked by the TLR4 inhibition. HDB increased the level of LC3-II and p62/SQSTM1. TLR4 inhibition blocked HDB-mediated increase in the level of LC3-II and p62/SQSTM1. These findings indicate that HDB may induce TLR4/JNK-dependent macrophage activation and TLR4-dependent macrophage autophagy.

• Journal of Microbiology and Biotechnology
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• 제34권7호
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• pp.1401-1409
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• 2024

Postbiotics have various functional effects, such as antioxidant, anti-inflammatory, and anti-obesity. Levilactobacillus brevis BK3, the subject of this study, was derived from lactic acid bacteria isolated from Kimchi, a traditional Korean fermented food. The antioxidant activity of BK3 was confirmed through the measurements of 2,2-diphenyl-1-picryl-hydrazyl (DPPH), 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), and total antioxidant capacity (TAC). The wrinkle improvement effect was validated by assessing elastase inhibitory activity and collagenase inhibitory activity. The intracellular activity was confirmed using human keratinocytes (HaCaT) and human fibroblasts (HFF-1). BK3 protects skin cells from oxidative stress induced by H₂O₂ and reduces intracellular reactive oxygen species (ROS) production. In addition, the expressions of the antioxidant genes superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx) were upregulated. Meanwhile, matrix metalloproteinase-1 (MMP-1) and collagen type I alpha 1 (COL1A1), involved in collagen degradation and synthesis, were significantly regulated. These results suggest the possibility of utilizing BK3 as a functional ingredient with antioxidant and wrinkle-improving effects.

• 생명과학회지
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• 제28권2호
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• pp.141-147
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• 2018

본 연구는 포도수확 후 버려지는 가지를 이용한 포도전정가지 추출물(Grape Pruning Stem Extracts, GPSE)에 함유된 polyphenol류 중 항산화, 항염증, 항암 등의 효과가 있다고 알려진 rutin, procyanidin B3, quercetin, kaempferol의 함량을 분석하고, UVB로 유도된 HR-1 mice의 손상된 피부에 대한 교원섬유, 탄력섬유 파괴억제 효과를 측정하여 기능성 화장품 소재로서의 응용 가능성을 확인하고자 하였다. 포도전정가지에서 polyphenol 성분을 80% EtOH로 추출하고 여과하여 농축한 후, 동결건조하여 $-20^{\circ}C$에 보관하면서 사용하였다. GPSE의 유효성분 함량은 HPLC를 사용하여 분석하였다. 피부손상을 유도하기 위해 UVB를 HR-1 hairless mice에 조사하였고, 손상된 피부에 교원섬유 파괴억제 효과를 보기 위해 Masson's trichrome stain, 탄력섬유 파괴 억제 효과를 보기 위해 Verhoeff's elastic fiber stain, MMP-9 단백 발현을 보기 위해 면역조직화학적 염색을 실시하였다. 본 연구에 사용된 포도전정가지 시료 53 kg에서 EtOH 분획 추출물 2.34 kg을 추출하여 4.42%의 수율 결과를 얻었다. 유효성분 분석결과, procyanidin B3, 0.28 mg/g, rutin 12.81 mg/g, quercetin 0.51 mg/g 및 kaempferol 8.24 mg/g로 나타났다. GPSE와 serum base를 혼합 도포한 그룹에서 UVB에 의한 교원섬유와 탄력섬유를 분해하는 MMP-9 단백발현 결과, 대조군 대비 평균 약 90% 감소 억제하는 효과를 볼 수 있었다. 교원섬유 파괴억제 효과는 모든 농도에서 평균 24%의 억제율과, GPSE와 serum base의 혼합물 농도 2,000 mg/kg 에서 43%로 가장 우수한 교원섬유 파괴억제효과가 나타났으며, 탄력섬유파괴 억제 효과는 모든 농도에서 평균 12%의 억제율과 GPSE와 serum base의 혼합물 농도 1,000 mg/kg에서 35%로 가장 우수한 탄력섬유 파괴 억제 효과가 있는 것으로 나타났다. 이 결과는 GPSE가 진피층의 세포 외 기질에 UVB 조사에 의해 파괴되는 교원섬유, 탄력섬유의 파괴를 억제하는 작용을 한다는 것을 알 수 있었다. 이상의 결과로 포도전정가지로부터 rutin, kaempferol, quercetin, procyanidin B3 등의 폴리페놀성 화합물이 화장품 기초 원료인 serum base에 함유토록 제조된 GPSE 는 교원섬유 파괴 억제, 탄력섬유파괴 억제효과 및 피부손상 기능개선 효과의 결과를 얻을 수 있었다. 본 연구의 의의는 지역포도농가에서 수확 후 버려지는 포도전정가지에서 폴리페놀류와 같은 유효성분을 확보하여 화장품 원료로서의 활용 가치가 높을 것으로 기대된다.

• 한국식품영양과학회지
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• 제41권11호
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• pp.1554-1558
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• 2012

고창 복분자의 개별인정형 건강기능식품 기능성 원료로 개발하기 위하여 지표성분 표준화를 위한 ellagic acid의 분석법 설정과 분석법에 대한 밸리데이션을 실시하였다. 1% formic acid가 첨가된 water와 acetonitrile을 이동상으로 하고 Symmetry$^{(R)}$ (C18, $4.6{\times}250mm$, $5.0{\mu}m$) 칼럼을 사용하여 기울기용리(gradient elution) 방법으로 분석하였다. 본 연구에서는 분석법을 확립하고 분석법에 대하여 특이성, 직선성, 정확성과 정밀성 그리고 회수율에 대하여 확인하였다. Ellagic acid의 검량선은 $R^2=0.9996$으로 좋은 선형성을 보였으며 LLOQ와 LOD는 각각 $1{\mu}g/mL$와 $0.3{\mu}g/mL$였다. 일내와 일간 분석에서 상대표준편차(RSD)는 각각 2.28%와 2.84%미만으로 나왔다. 회수율 측정결과에서는 89.17~97.92%로 나왔고, RSD는 0.05~0.14%였다. 그러므로 HPLC를 이용한 ellagic acid의 분석법이 고창 복분자 추출물의 기능성원료 표준화를 위한 지표성분 분석을 위한 적합한 시험법임이 검증되었다. 본 시험법에 따라 분석한 고창 미숙과 복분자 추출물 내의 ellagic acid의 함량은 세 lot를 3번씩 분석하였을 때 약 $1.92{\mu}g/mg$(0.192%)이 나왔으며 RSD값은 2.36% 이하였다. 따라서 본 연구를 통하여 확립된 ellagic acid의 분석법이 고창 복분자의 개별인정형 건강기능식품 기능성 원료 개발을 위한 기초자료로 활용될 것으로 본다.

• 한국응용과학기술학회지
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• 제32권2호
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• pp.312-319
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• 2015

In this study, n-butanol and ethyl acetate extracts were prepared from raw yam (Dioscorea batatas DECNE.). Their antioxidative potencies were investigated employing various in vitro methods, such as ferrous ion chelating, ${\beta}$-carotene bleaching assay, lipid peroxidation inhibition and nitric oxide (NO) radical scavenging and nitrite scavenging activity. The n-butanol fraction was assayed to possess stronger antioxidant activity by ${\beta}$-carotene bleaching assay, lipid peroxidation inhibition and NO radical scavenging activity. However, ethyl acetate extract was more effective in chelating ferrous ion and scavenging nitrite. Based on the results obtained, yam is a potential active ingredient that could be applied in antioxidation as well as bio-health functional food to take a good part in prevention of human diseases and aging.

• Journal of Applied Biological Chemistry
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• 제59권3호
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• pp.239-242
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• 2016

A novel Nicotinoyl fused peptide, Nicotinoyl-LVH, was synthesized by solid phase peptide synthesis method, purified, and tested in cultured skin cells. Nicotinoyl-LVH enhanced the expression level of collagen mRNA and its fragments in fibroblasts. These data show that this novel Nicotinoyl peptide is a promising biomaterial in the anti-aging functional cosmetic market.