• 한국식품과학회지
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• 제53권4호
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• pp.423-433
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• 2021

본 연구에서는 두충 잎의 분획물을 이용하여 미세먼지(PM_2.5)로 유도한 in vitro 뇌 신경세포 독성에 대한 항산화 활성 및 세포보호 효과를 확인하였다. EFEL은 우수한 ABTS 및 DPPH 라디칼 소거능을 나타냈으며, 지질과산화물 억제활성에서 양성대조군인 catechin과 동일한 농도에서 유사한 활성을 나타냈다. 또한, EFEL은 미세먼지로 유도된 해마세포(HT22), 뇌신경세포(MC-IXC) 및 미세아교세포(BV-2) 내의 ROS 수준을 효과적으로 감소시켜주었으며, 세포 생존능을 증가시킴으로써 세포보호 효과를 나타냈다. 미세먼지로 활성화된 BV-2에서 EFEL은 세포 활성화와 관련된 세포막 수용체인 TLR4와 p-JNK의 발현을 감소시켰다. 또한, 세포 사멸에 관여하는 caspase-3 활성화 전 단계인 procaspase-3와 세포 생존 경로에 관여하는 p-Akt 발현의 증가된 수준을 나타냈며, 염증성 사이토카인으로써 증가된 TNF-α의 수준을 감소시켰다. EFEL의 생리활성 물질을 HPLC로 분석한 결과, rutin과 chlorogenic acid가 확인되었다. 결과적으로, 두충 잎의 아세트산에틸 분획물은 우수한 페놀성 화합물 및 플라보노이드 함량을 나타냄으로써 높은 항산화능을 보였으며, 미세먼지로 유도된 산화적 스트레스에서 사멸 및 염증반응을 조절하여 뇌 신경세포를 보호하였다. 이를 고려할 때, EFEL은 미세먼지로 유도된 염증성 뇌신경세포 관련 질환 예방에 도움을 줄 수 있는 건강기능식품 소재로 활용될 수 있을 것으로 판단된다.

• 한국식품영양학회지
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• 제36권5호
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• pp.379-386
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• 2023

The objective of this study was to investigate the distribution of functional compounds in perilla leaves of various genetic resources and their antioxidant activities. A comprehensive analysis of functional compounds was conducted for 90 genetic resources, focusing on total polyphenol content (TPC), total flavonoid content (TFC), individual phenolic content (IPC), and lutein. Their antioxidant activities were then analyzed based on their radical scavenging capacity using ABTS (2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) and DPPH (2,2-diphenyl-1-picrylhydrazyl). The TPC content exhibited a range of 13.19 to 35.85 mg gallic acid equivalent/g, whereas the TFC content varied from 11.74 to 46.51 mg catechin equivalent/g. Total IPC was detected in a range of 6,310.98 to 40,491.82 ㎍/g. Lutein was detected at levels between 70.97 and 597.97 ㎍/g. ABTS and DPPH radical scavenging activities of perilla leaves ranged from 30.39 to 58.58 mg trolox equivalent (TE)/g and from 7.74 to 46.56 mg TE/g, respectively. Furthermore, correlation analysis demonstrated that rosmarinic acid, a phenolic acid, exhibited a significantly positive correlation with antioxidant activity. These findings suggest that various genetic resource of perilla leaves could effectively mediate antioxidant capacity. Results of this study provide valuable information for use of perilla leaves in Korea as functional food materials.

• 한국식품영양학회지
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• 제36권6호
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• pp.551-560
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• 2023

This study was performed to investigate antioxidant and anti-inflammatory activities of perilla(Perilla frutescens L.) seed, flower and leaf according to extraction condition. Perilla seed extracts(PSE), perilla flower extracts(PFE), perilla leaf extracts(PLE) was extracted by stirring extraction (STE, 25℃), shaking extraction (SHE, 80℃), and sonication assisted extraction(SAE, 25℃) with 94% ethanol, 60% ethanol and distilled water, followed by analysis of total polyphenol and flavonoid and testing radical scavenging activities. The highest total polyphenol content (5.47, 9.36, 38.58 mg gallic acid equivalent/g), total flavonoid content(5.77, 8.62, 46.44 mg catechin equivalent/g), ABTS(10.68, 19.46, 63.56 mg trolox equivalent/g) and DPPH(6.51, 7.69, 79.73 mg trolox equivalent/g) radical scavenging activity of PSE, PFE and PLE was observed in the HWE with 60% ethanol,. Among the three extraction method, SHE provided the best results for yield, polyphenol, flavonoid content of perilla seed, flower, leaf in comparison to STE or SAE. SHE with 60% ethanol of perilla seed, flower, leaf more effectively inhibited secretion of nitric oxide(NO) and pro-inflammatory cytokine in RAW 264.7 macrophage exposed to LPS compared to other extraction solvent and method. Therefore, these extracts obtained from perilla seed, flower, leaf could be used antioxidant and anti-inflammatory ingredients in the food industry.