Antioxidant, Anti-inflammatory and skin-aging Enzymes Inhibition potential of Asystasia vogeliana leaf n-hexane Extract and its Dechlorophyllized Equivalent
Asystasia vogeliana 잎 n-헥산 추출물 및 그 탈염소화 등가물의 항산화, 항염증 및 피부 노화 효소억제 작용
Purpose: The study investigated the antioxidant, anti-inflammatory, photoprotective and skin-aging retardation activities of Asystasia vogeliana leaf n-hexane extract (AVHE) and its dechlorophyllized equivalent (DAVHE). Methods: The total phenolics, flavonoids, vitamin A and vitamin E contents of the extracts were quantified. Antioxidant (DPPH scavenging, ferric reducing antioxidant power, total antioxidant capacity, lipid peroxidation and metal chelating inhibition), anti-inflammatory (lipoxygenase, trypsin and protein denaturation inhibition), photoprotective (SPF and UV blocking) and skin-aging enzymes (collagenase and tyrosinase inhibition) activities were evaluated using standard methods. The components of the most potent extract were identified via GC-MS technique. Results: AVHE and DAVHE possess slight concentrations of total phenolics (9.89±0.21 mg GAE/g and 1.43±0.08 mg GAE/g),and flavonoids (0.68±0.00 mg GAE/g, 2.13±0.00 mg GAE/g); AVHE exhibited significantly higher vitamin A and E content (87.29±0.84 mg RE/g, 12.04±0.11 mgTE/g) than DAVHE (41.29±0.74 mgRE/g, 7.31±0.82 mg TE/g). Both extracts showed moderate antioxidant activity. AVHE demonstrated higher trypsin inhibition (81.44%±0.83), protein denaturation inhibition (62.07%±0.00) and lipoxygenase inhibition (IC50=0.458±0.041 mg/ml). Both extract had similar collagenase and tyrosinase inhibitory activities. AVHE showed a significantly higher sun photoprotective activity (46.35±0.55) than DAVHE (28.92±5.13) and a commercial sunscreen (11.65±0.01). GC-MS analysis identified major constituents in AVHE, including 9,12,15-octadecatrienoic acid, (Z,Z,Z); n-hexadecanoic acid; 1-octadecyne and phytol. Conclusion: A. vogeliana leaf n-hexane extract is a promising candidate for skin care formulation. However, dechlorophyllization slightly reduces its efficacy.
한국어
목적: 본 연구에서는 Asystasia vogeliana 잎 n-헥산 추출물(AVHE)과 그 탈엽록소 추출물(DAVHE)의 항산화, 항염증, 광보호 및 피부 노화 지연 활성을 조사하였다. 방법: 추출물의 총 페놀릭, 플라보노이드, 비타민 A 및 비타민 E 함량을 정량화하였으며, 항산 화(DPPH 소거, 철 환원 항산화력, 총 항산화능, 지질 과산화 및 금속 킬레이트화 억제), 항염증(리폭시게나제, 트립신 및 단백질 변 성 억제), 광보호(SPF 및 UV 차단) 및 피부노화 효소(콜라게나제 및 티로시나제 억제) 등은 표준 방법을 사용하여 평가하였다. 추출 물의 활성 성분은 GC-MS를 통해 확인하였다. 결과: AVHE와 DAVHE는 약간의 총 페놀성 물질(9.89±0.21 mgGAE/g 및 1.43± 0.08 mgGAE/g)과 플라보노이드(0.68±0.00 mgGAE/g, 2.13±0.00 mgGAE/g)를 각각 함유하고 있습니다. AVHE (87.29±0.84 mgRE/g, 12.04±0.11 mgTE/g)는 DAVHE (41.29±0.74 mgRE/g, 7.31±0.82 mg TE/g)보다 비타민 A 및 E 함량이 유의하게 더 높았다. 두 추출물 모두 적당한 항산화 활성을 나타냈다. AVHE는 더 높은 트립신 억제(81.44%±0.83), 단백질 변성 억제(62.07% ±0.00) 및 리폭시게나제 억제(IC50=0.458±0.041 mg/mL)를 나타냈다. 두 추출물 모두 유사한 콜라게나제 및 티로시나제 억제 활성을 나타냈다. AVHE는 DAVHE (28.92±5.13) 및 상업용 자외선 차단제(11.65±0.01)보다 훨씬 더 높은 광보호 활성(46.35± 0.55)을 나타냈다. GC-MS 분석을 통해 AVHE에 9,12,15-옥타데카트리엔산(Z,Z,Z); n-헥사데칸산; 1-옥타데신과 피톨 등 주요 한 성분을 확인하였다. 결론: A. vogeliana 잎 n-헥산 추출물은 스킨 케어제의 유망한 후보물질이며 탈엽록소화는 그 효능을 약간 감소시킨다.
Abstract Introduction Materials and Methods 1. Collection and identification of plant sample 2. Chemicals 3. Preparation of extracts 4. Estimation of chlorophyll content 5. Estimation of total phenolic content 6. Estimation of total flavonoid content 7. Estimation of total vitamin A content 8. Estimation of total vitamin E content 9. Antioxidant assays 10. Anti-inflammatory assays 11. Anti-aging assays 12.Determination of photoprotective activity and UV blocking ability 13. Gas chromatography-mass spectroscopy analysis 14. Statistical analysis Results 1. Chlorophyll, vitamin A, vitamin E, phenolics and flavonoid contents 2. Antioxidant activities of A. vogeliana leaf n- hexane extracts. 3. Anti-inflammatory activities of A. vogeliana leaf n-hexane extracts 4. Anti-aging activities of A. vogeliana leaf n-hexane extracts 5. Photoprotective activity and UV filtering potential 6. GC-MS analysis Discussion Conclusion Author's contribution Author details References 국문초록 中文摘要