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Comptes Rendus Chimie
Volume 12, n° 5
pages 602-611 (mai 2009)
Doi : 10.1016/j.crci.2008.04.011
Received : 8 January 2008 ;  accepted : 25 April 2008
Polyphenol extraction from eight Perilla frutescens cultivars
 

Linghua Meng a, b, c, Yves Lozano a, Isabelle Bombarda b, Emile M. Gaydou b, , Bin Li c
a CIRAD, UMR CIRAD-16, Génie des procédés, eau et bioproduits (GPEB), Centre de coopération internationale en recherche agronomique pour le développement (CIRAD), TA B64/16, 73, avenue Agropolis, 34398 Montpellier cedex 5, France 
b UMR CNRS 6263, Institut des sciences moléculaires de Marseille, Equipe phytochimie, Université Paul-Cézanne, avenue escadrille Normandie Niémen, case 461, 13397 Marseille cedex 20, France 
c South China Agricultural University (SCAU), Wushan, Tianhe, 510642 Guangzhou, China 

Corresponding author.
Abstract

Eight cultivars of Perilla frutescens (L.) (var. frutescens and var. crispa ) Britt. belonging to red and green varieties were harvested in China and Japan. Water extractions of dried plants were investigated at a small industrial scale, and their polyphenolic contents were determined, identified and compared. Three cinnamic derivatives (coumaroyl tartaric acid, caffeic acid and rosmarinic acid) ranged from 0.1 to 11mg/g dry weight. Six flavonoids (apigenin 7-O -caffeoylglucoside, scutellarein 7-O -diglucuronide, luteolin 7-O -diglucuronide, apigenin 7-O -diglucuronide, luteolin 7-O -glucuronide, and scutellarein 7-O -glucuronide) ranged from 3.5 to 18.5mg/g. Six anthocyanins (0.7–2mg/g) were detected in only red-green or red cultivars, including cis -shisonin, shisonin, malonylshisonin and cyanidin 3-O -(E )-caffeoylglucoside-5-O -malonylglucoside. The eight cultivars were classified into four chemotypes: two rich in phenolic acids (20–43%) and flavones (50–80%), with or without anthocyanins (0–7%) and two with mainly flavones (90–98%), with or without anthocyanins (0–7%). These extracts could be used for colored water beverages or various antioxidant pharmaceutical/biomedical applications.

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Résumé

Huit cultivars de Perilla frutescens (L.) (var. frutescens et var. crispa ) Britt. appartenant aux variétés rouges et vertes ont été récoltées en Chine et au Japon. L'extraction aqueuse des plantes séchées à l'échelle pilote a été réalisée et la nature ainsi que la composition en polyphénols effectuées et comparées. La teneur des dérivés cinnamiques (acides coumaroyl tartrique, caféïque et rosmarinique) varie de 0,1 à 11mg/g. La teneur des six flavonoïdes (apigénine 7-O -caféoylglucoside, scutellareine 7-O -diglucuronide, lutéoline 7-O -diglucuronide, apigénine 7-O -diglucuronide, lutéoline 7-O -glucuronide, et scutellaréine 7-O -glucuronide) varie de 3,5 à 18,5mg/g. Parmi les six anthocyanines détectées seulement dans les cultivars rouge-vert ou rouge (0,7–2mg/g), la cis -shisonine, la shisonine, la malonylshisonine et la cyanidine 3-O -(E )-caffeoylglucoside-5-O -malonylglucoside ont été identifiées. Ces cultivars sont classés en quatre chémotypes: deux riches en acides phénoliques (20–43%) et en flavones (50–80%), avec ou sans anthocyanines (0–7%) et deux autres chémotypes contenant principalement des flavones (90–98%), avec ou sans anthocyanines (0–7%). Ces extraits aqueux pourraient être utilisés pour la coloration de boissons aqueuses ou bien comme antioxydants naturels dans des applications pharmaceutiques/biomédicales.

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Keywords : Perilla frutescens , Polyphenolics, Anthocyanins, Flavonoids, Cinnamic acid derivatives

Mots-clés : Perilla frutescens , Polyphenols, Anthocyanines, Flavonoides, Acides cinnamiques




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