강황 분말을 0, 2, 3, 4%를 첨가한 어묵을 제조하여 색도, 절곡검사, 조직감, 관능검사 등의 품질 특성을 조사하였다. 색도 변화는 L, a값은 강황 분말의 첨가량이 증가할수록 감소하였고 b값은 증가하였다. 어묵의 유연성과 탄력성을 나타내는 절곡검사에서는 대조군을 포함한 모든 시료에서 AA로 측정되어 강황 분말의 첨가에 관계없이 우수한 것으 로 나타났다. 강황 분말을 첨가한 어묵의 기계적 texture 특성은 강황 분말 첨가량이 증가할수록 경도(hardness), 응 집성(cohesiveness), 탄력성(springiness)은 증가하였고, 검 성(gimminess)과 파쇄성(brittleness)은 감소하였다. 관능검 사 결과로 색깔(color), 향미(flavor), 조직감(texture), 맛 (taste), 전체적인 선호도(overall acceptance)는 3%의 첨가군 이 가장 높은 평가를 받았다. 따라서 강황 분말을 첨가한 기능성 강황 어묵의 가공 적성에 적절한 강황의 첨가량은 3%가 적당하다고 사료되며 강황을 함유한 고품질 어묵의 제조 가능성을 확인하였다.

Curcuma longa L. leaf was extracted by water at 60˚C for 12 hours after being treatment of Ultra High Pressure under 500 MPa for 5-15 minute. The high pressure extraction for 15 minute (HPE15) was measured the highest extraction yield of 25.48% (w/w), compared to those from conventional extraction methods. The HPE15 showed the lowest cytotoxicity as 11.97% in adding 1.0mg/mℓ of concentration. Also, HPE15 was measured the highest inhibition of hyaluronidase as 44.48% in adding 1.0mg/mℓ. In addition, The production of NO from macrophages was measured as 7.06μM in adding 1.0mg/mℓ of HPE15, which was lower than the those from others processes. Finally, HPE15 significantly reduced up to 649.44pg/mℓ of ProstaglandinE2 production from UV-irradiation. These results suggest that the Curcuma longa Linne leaf extract from high pressure process might enhance the skin immune activities possibly by high elution of active components than other processes.

Cosmetic activities of the leaves of Curcuma longa L. were compared according to different drying methods, to expand the use of the by-products of Curcuma longa L. The highest extraction yield of 29.4% was obtained from vacuum drying process (VD), whose value was very close to 29.2% from freeze drying process (FD). Relatively lower extraction yield were observed as 24.5% and 25.3% from the raw leaf (RL) as control and hot air drying process (HD). The cytotoxicity was observed lower FD and VD than RL and HD. It shows that cytotoxicity was closely related to cosmetic activities such as tyrosinase and melanin inhibition activities by showing much better cosmetic activities of the extracts from both FD and VD than those from the RL and HD. It was interesting that was differences of the cosmetic activities and cytotoxicity between FD and VD, which implies that VD method should be a more efficient process than FD method in terms of drying time and operation costs: 6 hours vs 24 hours and 3-5 times higher extraction costs in drying. It was observed that VD is more excellent dry method than others. This result could be utilized to effectively dry other soft plant biomass.

본 연구 결과 울금 에탄올 추출물이 DMBA에 의해 유도한 유선 암화과정에서 종양의 발생률과 종양수를 감소시킴을 확인하였다. 이러한 종양세포의 증식 억제 효과는 울금의 암 예방 효과에 대한 기본 메커니즘 중 하나이다. 앞으로 효과적인 투여 경로 및 조직 특이성을 검토하기 위하여 더 많은 연구가 필요하다고 사료된다.

This study was designed to evaluate antioxidant activity of Curcuma longa L. leaves treated by ultra highpressure extraction. Curcuma longa L. leaves was subjected to 5,000 bar for 5 and 15 min at 25℃ The highest phenolics andflavonoids content was observed in the treatment of high pressure extraction for 15 min (308.28㎍/㎎, 124.33㎍/㎎). TheDPPH scavenging activity was 82.34% at 1.0㎎/㎖ of Curcuma longa L. leaves treated by ultra high pressure process for 15min. The highest SOD-like acitivity of Curcuma longa L. leaves (1.0㎎/㎖) was observed at ultra high pressure extractionfor 15 min (67.54%). The high pressure extraction significantly increased the contents of phenolics and flavonoids and alsoenhanced the antioxidant activity. These results provide useful information for enhancing biological properties of Curcumalonga L. leaves.

Collected germplasms of five representative species belonging to Curcuma genus (C. longa, C. aromatica, C.zedoaria, C. phaeocaulis and C. kwangsiensis) were 52 samples from different farmhouse in Korea and China. To elucidatethe genetic diversity among the species, 52 samples were analyzed by genomic fingerprinting method using amplified frag-ment length polymorphism (AFLP). AFLP results of 6 primer combinations were revealed 643 total DNA fragments and349 polymorphic bands with the 54.3% ratio of polymorphism. In the analysis of coefficient similarity using unweight pairgroup method with arithmetic averages (UPGMA), 52 Curcuma germplasm lines were ranged from 0.60 to 0.99 and clus-tered distinct five groups according to the species and collected geographical levels. However, the result of principal coordi-nate analysis (PCA) by multi-variate analysis was shown significantly greater differences among species than geographicalorigins based on AFLP profiling data of these samples.

This study was conducted to investigate the effect of Curcuma longa L. powder (CLP) on the quality characteristics of a dumpling shell. Dumpling shell samples were prepared with wheat flour and different amounts of CLP were added to them, after which their instrumental characteristics and sensory evaluation were investigated. The gelatinization temperature of the CLP-wheat flours composite increased, whereas its initial viscosity at 95℃, viscosity at 95℃ after 15 min and maximum viscosity all fell with the increasing CLP content, as measured via amylography. As increasing amounts of CLP were added, the L value decreased, whereas the a and b values increased. With regard to the textural characteristics, the CLP additive became harder, more cohesive and adhesive, and less springy. The DPPH free radical scavenging activity increased significantly as the CLP content increased (p<0.05). Overall, the dumpling shells with 3% CLP were preferred over the other samples, as tested via sensory evaluation.

Studies were carried to evaluated the influence of storage method by temperatures and fillers on yield and quality of seed rhizome in turmeric. Seed rhizome was stored at styrofoam box filled with rice hull and sand (3:1) or vermiculite for 30, 60 and 90 days at different temperatures (5, 10 and 15℃. compared to traditional method (rhizome only). Parameters were obtained for weight loss, cold injury, percentage of decayed in stored rhizome during storage periods. Also, the germination, growth pattern and yield from stored rhizome has been investigated. It was confirmed that storage of turmeric in stored with filled with vermiculite helps in prevention of rhizomes from microbial and fungal attack. The storage of rhizomes in styrofoam box without any filler at low temperature below 10℃. is not advocated due to heavy losses weight and decayed in management of postharvest for turmeric rhizome. Germination percentage, growth pattern and yield was maximum for rhizomes stored at styrofoam box filled with vermiculite for 90 days at 15℃. The paper outlines a brief attempt to assess the efficacy of non-chemical methods including optimal storage method (temperature and filler) of control of decay and moisture losses during storage of turmeric.

파종기에 따른 울금의 초장, 경직경 및 엽수는 5월 10일 파종구에서 가장 양호하였다. 생육단계에 따른 울금의 생육변화를 살펴본 결과 울금의 생육최성기인 10월에 초장은 121 cm로 가장 길게 나타났고, 경직경 또한 3.45 cm로 가장 두꺼웠다. 엽수는 9월 20일 6매로 조사되었으나 이후 엽수가 감소함이 관찰되었다. 생육단계에 따른 울금 지하경 무게 변화는 생육기간에 경과함에 따라 지하경의 무게 증가가 비례하였으며, 11월 20일 조사에서 울금의 수량이 가장 크게 나타났다. 울금을 건조하는데 가장 적합한 온도는 40℃로 확인되었다. 부형제를 달리하여 제조한 울금환의 관능검사 결과는 향, 색, 맛, 조직감 및 종합적 기호도에서 찹쌀과 꿀을 부형제로 사용한 시험구의 기호도가 가장 우수하였으며 밀가루만을 사용한 시험구의 선호도는 낮게 나타났다.

In this study, the effect of Curcuma longa L. on obesity and insulin resistance was investigated in animals fed a moderate high fat diet. The animals used in this study were normal weight Spargue-Dawley (SD) rats and type 2 diabetic obese db/db mice. Accumulation of abdominal adipose tissue and weight gain were inhibited in the animals fed the C. longa extract. C. longa decreased fasting insulin and HOMA-IR in the SD rats, and effectively decreased blood glucose and hemoglobin A1c in db/db mice. C. longa decreased serum free fatty acid (FFA) level in the SD rats. FFA in db/db mice fed C. longa tended to decrease. C. longa significantly decreased serum triglyceride level. Our results collectively represent that C. longa prevented fat accumulation and insulin resistance in both normal weight SD rats and type 2 diabetic obese db/db mice fed a moderate high fat diet.