일본 아오모리의 식품소재로부터 건강 기능성 구명과 고부가가치화 전략

정헌식(鄭憲植),정신교(鄭信敎),아외이쿠니히사(岩井邦久),마쯔에하지메(松江一) 한국식품저장유통학회 2008 식품저장과 가공산업 Vol.7 No.2

혼합물 실험계획법에 의한 머위 및 부원료의 혼합비율 최적화

정해진(Hae-Jin Jeong),이경필(Kyoung-Pil Lee),정헌식(Hun-Sik Chung),김동섭(Dong-Seop Kim),김한수(Han-Soo Kim),최영환(Young-Whan Choi),임동순(Dong-Soon Im),성종환(Jong-Hwan Seong),이영근(Young-Guen Lee) 한국생명과학회 2015 생명과학회지 Vol.25 No.3

호흡기계 질환에 효과적이라고 알려져 있는 식물성분들을 이용하여 기능성 음료를 개발하고자, 혼합물 실험계획법을 통해 혼합 최적 비율을 찾기 위한 실험을 수행하였다. 즉, 머위 30~70%, 수세미 10~30% 및 어성초 10~30% 비율로 혼합하여 중앙점 반복을 포함하여 총 12개의 실험점을 설계하였고, 이 설계를 바탕으로 혼합물은 121℃에서 45분간 중탕 추출을 하여 anti-allergy activity 및 anti-microbial activity를 측정하였다. anti-allergy activity 효과는 Response surface와 trace plot을 보면 머위의 함량이 많을수록 좋은 효과를 나타내었고 수세미는 다소 약한 영향을 미친다는 것을 알 수 있었다. 다중회귀분석 결과 상관계수 R²=82.10%이며 유의적인 회귀식으로 설명이 가능한 것으로 확인되었다. 따라서 최적비율은 머위 0.75, 수세미 0.14 그리고 어성초 0.11의 비율로 결정되었다. anti-microbial activity는 혼합비율에 따른 각 추출물들이 그람양성균인 Staphylococcus aureus (KCCM 40881), Staphylococcus epidermidis (KCCM 35494)에 대해서는 유효하나 그람음성균인 Escherichia coli (KCCM 11234), Pseudomonas aeruginosa (KCCM 11328)에 대해서는 미미하거나 효과가 나타나지 않았다. This study was performed to determine the optimal ratio of Petasites japonicus, Luffa cylindrica, and Houttuynia cordata, all of which are supposed to have anti-respiratory disease effects, such as against rhinitis. The experiment incorporated a mixture design and included 12 experimental points with center replicates for three different independent variables (Petasites japonicus 30~70%; Luffa cylindrica 10~30%; and Houttuynia cordata 10~30%). Based on this design, the mixture was extracted in hot water at 121°C for 45 min and anti-allergy and anti-microbial activities were observed. The response surface and trace plot described for the anti-allergy activity showed Petasites japonicas was a relatively important factor. The correlation coefficient (R²) value 82.10% for the inhibition effect of degranulation was analyzed by the regression equation. The analysis of variance showed the model fit was statistically significant (p<0.05). The optimal ratio of the mixture was Petasites japonicus 0.75%, Luffa cylindrica 0.11%, and Houttuynia cordata 0.14%. The anti-microbial activity for each extraction of the mixture was valid on gram-positive, such as Staphylococcus aureus (KCCM 40881) and Staphylococcus epidermidis (KCCM 35494), while it was less effective on gram-negative, such as Escherichia coli (KCCM 11234) and Pseudomonas aeruginosa (KCCM 11328).

가공 온도 및 갈변 억제제가 신선절단 우엉의 품질 특성에 미치는 영향

정헌식 ( Hun Sik Chung ),성종환 ( Jong Hwan Seong ),문광덕 ( Kwang Deog Moon ) 한국식품저장유통학회 ( 구 한국농산물저장유통학회 ) 2012 한국식품저장유통학회지 Vol.19 No.1

Fresh-cut burdock roots were processed at 4 and 25℃, respectively. The fresh-cut burdock roots were treated with different browning inhibitors (3% citric acid, 3% sodium chloride, 0.3% cystein, and 3% sodium acetate solutions), and the changes in their quality and browning characteristics were investigated. The respiration rate and browning index of the cut roots prepared at 4℃ were lower than those of the cut roots prepared at 25℃. The soluble solid content was higher in the cut roots prepared at 4℃ than in those prepared at 25℃. The weight loss and flesh firmness were not affected by the processing temperatures. Among the browning inhibitors, 0.3% cystein showed the best browning-retarding effect. There was no difference in phenolic compound content between the browning-inhibitor-treated roots and the nontreated roots, but the PPO activity was higher in the latter than in the former. Therefore, the processing temperatures of fresh-cut burdock roots affected their quality and browning development, and the combination of a low processing temperature and the use of the proper browning inhibitor should be applied for the higher quality of the produce.

볶음온도에 따른 옥수수 분말의 흡습특성

정헌식,윤광섭 한국식품저장유통학회 2014 한국식품저장유통학회지 Vol.21 No.3

볶음온도에 따른 옥수수 분말의 흡습특성을 구명하기 위하여, 옥수수 낟알을 160, 180, 200, 220, 240℃에서 20분간 볶은 후 분쇄하고, 20℃에서 각 분말의 수분활성도(aw) 0.11, 0.33, 0.53, 0.75, 0.90에 따른 평형수분함량(EMC)을 측정하여 등온흡습곡선을 작성하였다. 볶은 옥수수 분말의 등온흡습곡선은 aw 증가에 따른 EMC 증가가 전형적인 sigmoid 형태를 보였으며, aw 0.53 이상의 영역에서는 동일 aw에서 볶음온도가 고온일수록 높은 EMC를 나타내었다. 옥수수 분말의 등온흡습곡선은 볶음온도의 뚜렷한 영향이 없이 Oswin, Caurie, Henderson, Halsey 모델로 설명이 가능하였으며, 가장 적합한 모델은 Oswin인 것으로 나타났다. 단분자층 수분함량은 전범위의 aw영역에서 GAB 방정식으로 예측할 수 있었으며, 볶음온도가 높아짐에 따라 증가하는 경향을 보여서 180℃에서는 0.043 kg H2O/kg solids, 240℃에서는 0.053 kg H2O/kg solids을 각각 나타내었다. 이로써 옥수수의 볶음온도가 분말의 20℃ 흡습특성에 영향을 미치는 것으로 확인되었다.

부추의 증숙처리가 착즙액 분무건조 분말의 품질에 미치는 영향

정헌식,김한수,김동섭,이영근,성종환 한국식품저장유통학회 2015 한국식품저장유통학회지 Vol.22 No.3

This study was conducted to develop a spray-dried garlic chives (Allium tuberosum) powder and to evaluate its quality characteristics depending on the treatment of steam blanching pretreatment (100℃, 3 min) and the addition of forming agents (dextrin (DE=10), β-cyclodextrin) during process. The steam blanching pretreatment showed an increase in L* value while a decrease in -a*, b*, C*, and h° values of the powder. Moisture content and water soluble index were not affected by the treatment of steam blanching and the addition of forming agents, whereas the particle diameter was the smallest in the steam blanching treatment and dextrin addition. Chlorophyll, phenolic compound, and vitamin C content, and DPPH radical scavenging activity of non-pretreated powder were significantly higher than those of the steam blanching treated powders. However, there was no significant difference between the two forming agents. The sensory acceptability (color, smell, and overall acceptability) of powder treated with steam blanching were significantly higher than those of non-pretreated powders. Therefore, the steam blanching pretreatment of fresh garlic chives affected on the better quality characteristics of the spray-dried powders when compared with non-pretreated powder though it adversely affected the natural chemical quality of fresh garlic chives.

동결 전처리가 매실의 착즙과 건조 특성에 미치는 영향

정헌식 ( Hun Sik Chung ),김한수 ( Han Soo Kim ),이영근 ( Young Guen Lee ),성종환 ( Jong Hwan Seong ) 한국식품저장유통학회 ( 구 한국농산물저장유통학회 ) 2010 한국식품저장유통학회지 Vol.17 No.4

Quality comparison of dried slices processed from whole persimmons treated with different deastringency methods

정헌식,김도희,김한수,이영근,성종환,윤광섭,문광덕 한국식품과학회 2017 Food Science and Biotechnology Vol.26 No.2

The effects of different deastringency treatments (untreated, carbon dioxide, warm water, or ethanol), before drying on the quality characteristics of dried fruit slices prepared from whole “Cheongdobansi” persimmons were evaluated. L* (lightness) and a* (redness) values of dried slices from warm water- and ethanol-treated groups were higher, respectively, compared to that of dried slices from other groups. Hardness was lower in dried slices from ethanol-treated fruits. Moisture, water activity, soluble solids, titratable acidity, and sensory properties (color, aroma, texture, sweetness, and overall acceptability) of the dried slices from astringency-removed fruits were higher when compared to those of the dried slices from non-treated persimmons. In particular, the dried slices from ethanol-treated fruits showed the highest values for these parameters. Moreover, soluble tannin and DPPH radical scavenging activity decreased by deastringency treatment. Results suggest that ethanol deastringency treatment before drying could be a useful method to improve most quality characteristics, except antioxidative activity, of dried persimmon slices.

Optimization of Roasting Conditions according to Antioxidant Activity and Sensory Quality of Coffee Brews

정헌식,김도희,윤광섭,이주백,문광덕 한국식품과학회 2013 Food Science and Biotechnology Vol.22 No.1

Response surface methodology (RSM) was used to determine the optimal roasting temperature and roasting time of coffee beans used for preparing brews with high antioxidant activity and sensory quality. Green coffee beans (Coffea arabica L. cv. Colombia Organic Tamata)were roasted at temperatures ranging from 140 to 220oC for 2-10 min and were then brewed with dripping hot water. The effects of the roasting conditions on the browning index, antioxidant activity, color, aroma, taste, and overall acceptability of the coffee brewed from the bean were investigated using a second-order central composite design. The quality indicators except the taste were significantly affected by roasting temperature and time, tending to increase and then decrease with increasing roasting temperature and time. Superimposed contour plots indicated that the optimal roasting temperature was 182oC and optimal roasting time was 7 min.

Sprouting and Quality Control of Fresh Ginger Rhizomes by Modified Atmosphere Packaging with Film Perforation

정헌식,문광덕 한국식품과학회 2011 Food Science and Biotechnology Vol.20 No.3

The quality of ginger rhizomes packaged in low density polyethylene bags (modified atmosphere packaging - MAP) without perforations (P-0), with 2perforations (P-2), and 12 perforations (P-12) have been investigated for 5 months at 12±1^oC. Sprouting and rotting rates of ginger in P-2 and P-12 were lower than ginger in P-0. Weight loss was higher in P-12 than P-0 and P-2. Surface L^* (lightness) and a^* (redness) values in P-2 and P-12 were lower and higher, respectively, than those found for P-0. Sensory appearance and overall acceptability were rated significantly better in P-2 and P-12 than in P-0. Internal color, firmness, soluble solids, and pH of ginger in MAP were not affected by presence of perforations. Therefore, MAP with the appropriate number of perforations (in this work, 2 perforations) could be a useful method to control sprouting and maintain quality except for surface color of stored ginger rhizomes.

Maintaining Quality of Wild Vegetables (Aster glehni and Aruncus dioicus var. kamtschaticus) from Ulleungdo(Island), Korea by Modified Atmosphere Packaging

정헌식,문광덕,Mal-Gum Choi 한국식품과학회 2010 Food Science and Biotechnology Vol.19 No.1

Wild vegetables, Aster glehni and Aruncus dioicus var. kamtschaticus, produced from Ulleungdo (Island), Korea were packaged with 30 μm polypropylene (PP), 30 μm antifogging oriented polypropylene (A-OPP),30 μm microperforated antifogging oriented polypropylene (MiA-OPP), 30 μm macroperforated low density polyethylene (Ma-LDPE), and 20 μm macroperforated high density polyethylene (Ma-HDPE), stored at 4, 10, and 20℃. Concentrations of O2 and CO2 in the packages were not modified by Ma-LDPE and Ma-HDPE. Weight loss was retarded by PP, A-OPP, MiA-OPP, especially as storage temperature decreased. Soluble solids were not affected by packaging materials. pH slightly decreased in LDPE and Ma-HDPE. Appearance, color, and overall acceptability of both vegetables stored at 4℃ in PP or MiA-OPP showed the highest sensory score. These results suggest that packaging with PP or MiA-OPP films and storage at 4℃ could be a useful method to maintain quality of the wild vegetables.