Centella asiatica (C. asiatica) has been widely used in food, cosmetics, and pharmaceutical industry as a functional material. In a previous study, we have investigated not only pharmacological effects such as antioxidative and anti-inflammatory effects, but also analyzed various functional ingredients. In this study, triterpenoids were analyzed using HPLC-DAD to determine marker compounds among functional ingredients. When triterpenoids were analyzed, asiaticoside from C. asiatica was determined as an optimal marker compound. Next, specificity, linearity, limited of detection (LOD), limited of quantification (LOQ), precision, accuracy, and range were evaluated using HPLC-DAD to determine asiaticoside contents in C. asiatica juice and extracts. The specificity was elucidated by chromatogram and retention time using an established analytical method. The coefficient of correlation obtained was 0.9996. LOD was 4.99 μg/mL and LOQ was 15.12 μg/mL. Intra- and inter-day precision of asiaticoside were determined to be 0.48~1.68% and 0.08~1.09%, respectively. Furthermore, the recovery rate of asiaticoside was 98.88% and the analytical range of Field-70E was determined to be 0.625~10 mg/mL. As a results of evaluating ABTS, DPPH, and FRAP antioxidative effect, Field-70E showed potent antioxidant activities. Results of this study could be used as basic data for quality standardization of C. astiatica juice and extracts.

구아바 잎 추출물의 항산화 활성과 항염증 소재로서의 활용 가능성을 확인하고자 하였다. 구아바 잎 추출물의 총 폴리페놀 함량, 총 플라보노이드함량, RAW 264.7 세포에 대한 세포 독성 및 NO 생성 억제를 통한 항염증 효과, 피부에 대한 안전성 평가를 실시하였다. 본 실험 결과, 총 폴리페놀과 플라보노이드의 함량이 각 126.4 mg/g, 223.17 mg/g으로 높은 함량을 확인하였다. 대식세포인 264.7세포에 대한 세포 독성이 나타나지 않았으며 NO 생성을 농도 의존적으로 억제되는 것을 확인하였다. 구아바 잎 추출물을 함유한 크림을 제조하여 1차 첩포 테스트를 실시하여 피부 안전성을 확인한 결과 첩포 24 시간 후와 첩포 제거 24 시간 후에도 피부에 대한 자극은 확인되지 않았다. 이러한 결과를 종합해 볼 때 높은 총 폴리페놀과 플라보노이드의 함량으로 인한 항산화 활성이 우수하고, 세포에 대한 피부 독성이 적고 NO 생성 억제 효과가 확인됨에 따라 항산화 및 항염증 효과를 가진 소재로서의 활용 가능성을 확인하였다.

복분자를 개별인정형 건강기능식품 기능성 원료로 개발하기 위하여 지표성분 표준화를 위한 ellagic acid의 분석법 설정과 분석법에 대한 검증(validation)을 실시하였다.그 결과 ellagic acid의 검량선은 R2=0.9999으로 좋은 선형성을 보였으며, 검출한계 0.6µg/mL, 정량한계는 1.9µg/mL였다. 회수율을 측정한 결과에서는 89.0-100.0%로 나왔고, 상대표준편차(RSD)는 0.05-0.14%를 보였으며, 일내와일간 분석에서 RSD는 각각 0.28-1.96%와 0.69-2.49%로나왔다. 따라서 본 연구를 통해 복분자 추출물의 지표물질인 ellagic acid의 분석법은 적합한 시험법임이 검증되었다.

Compound K(ginsenoside M1) is one of saponin metabolites and has many benefits for human health. This study was to investigate Compound K produced from ginseng crude saponin extract with commercial cellulolytic complex enzyme(cellulase, β-glucanase, and hemicellulase) obtained from Trichoderma reesei. The effect factors(temperature, pH, ginseng crude saponin extract and enzyme concentration, and reaction time) on production of Compound K from ginseng crude saponin extract were determined by one factor at a time method. The selected major factor variables were ginseng crude saponin extract of 2%(w/v), enzyme of 7%(v/v), reaction time of 48 hr. Based on the effect factors, response surface method was proceeded to optimize the enzymatic bioconversion conditions for the desirable Compound K production under the fixed condition of pH 5.0 and 50℃. The optimal reaction condition from RSM was ginseng crude saponin extract of 2.38%, enzyme of 6.06%, and reaction time of 64.04 hr. The expected concentration of Compound K produced from that reaction was 840.77 ㎎/100 g. Production of Compound K was 1, 017.93 ㎎/100 g and 862.31 ㎎/100 g, by flask and bench-scale bioreactor(2.5ℓ) system, respectively.

In this study, the chemical properties and phenolic compound of blueberry, bokbunja and mulberry and their pomace were determined to develop them as functional food materials. Water content of individual whole berry was ranged from 84.25-86.20%, and water content was significantly high in whole berries rather than their pomace (p<0.01). Additionally, each berry and its pomace’s pH was 3.32-5.18. Among them, whole mulberry showed the highest pH which is 5.18 (p<0.01). Total polyphenol and flavonoid contents were the greatest in blueberry pomace and they were 24.81 mg/g and 2.13 mg/g, respectively (p<0.01). However, mulberry pomace generated the greatest anthocyanin content compared to others (p <0.01). In phenolic compound profiles, cyanin chloride was detected in mulberry and bokbunja. Epigallocatechin, gallocatechin and isorhamnetin were found only in blueberry. Catechin (hydrate) and epicatechin were greater in pomaces than whole berries except blueberry (p<0.01), otherwise, significantly great rutin (trihydrate) and quercetin contents were found in whole berries as compared to their pomace except blueberry (p<0.01). Gallic acid was significantly greatest in mulberry (p< 0.01) and quercetin 3-D-galactoside was significantly greatest in blueberry (p< 0.01). Apigenin and luteolin were traced in mulberry, and mulberry pomace showed greater apigenin and luteolin contents than whole mulberry (p<0.01). Naringenin was greater in pomaces than whole berries (p <0.01). As a result, it was found that all berry extracts used in this study were able to be applied as