Leopoldia comosa is a spontaneous plant growing in all Mediterranean area including Calabria where its bulbs known as “cipudizze” were used in traditional gastronomy and used flavoured with garlic, chilli pepper, or fried with potatoes [1,2]. Bulbs (300 g) were extracted with EtOH through maceration. In order to operate a separation of lipophilic compounds, the total extract was solubilized with MeOH/H2O (8:2) and extracted with n-hexane. The ethanol extract showed a total phenols content of 56.6 mg chlorogenic acid equivalent per g of extract while a flavonoids content of 23.4 mg quercetin equivalent per g of extract. Ethanolic extract demonstrated the strongest radical scavenging activity with an IC50 value of 40.9 ug/ml. Alzheimer’s disease (AD) is the most common form of neurodegenerative disorders. Actually, AD treated by the use of agents which restore the level of acetylcholine through inhibition of both two major forms of cholinesterase: acetylcholinesterase (AChE) and butyrylcholinesterase (BChE). Bulbs n-hexane extract exhibited the highest bioactivity tested using Ellman's method [3] with IC50 values of 104.9 and 128.1 ug/mL for AChE and BChE, respectively. [1]. Pieroni A et al., Food for two seasons: culinary uses of non-cultivated local vegetables and mushrooms in a south Italian village. Intern J Food Sci Nutr 2005, 56:245-272; [2]. Drewnoswski A et al., Bitter taste, phytonutrients, and the consumer: a review. Am J Clin Nutr 2000, 72:1424-1435; [3]. Menichini F et al., Acetylcholinesterase and butyrylcholinesterase inhibition of ethanolic extract and monoterpenes from Pimpinella anisoides V Brig. (Apiaceae). Fitoterapia 2009, 80:297-300.
Leopoldia comosa è una pianta spontanea dell’area Mediterranea che cresce anche in Calabria dove i suoi bulbi sono noti come “cipudizze” ed utilizzati nella tradizione gastronomica insaporite con aglio, peperoncino o fritte insieme alle patate [1,2]. I bulbi (300 g) sono stati sottoposti ad estrazione per macerazione con EtOH. Con lo scopo di isolare la frazione lipofilica, l’estratto totale è stato solubilizzato in MeOH/H2O (8:2) e estratto con n-esano. L’estratto etanolico dei bulbi presenta un tenore in fenoli totali di 56.6 mg di equivalenti di acido clorogenico per g di estratto, mentre il contenuto in flavonoidi è di 23.4 mg di equivalenti di quercetina per g di estratto. L’estratto etanolico presenta la maggiore attività radical scavenging con un valore di IC50 di 40.9 ug/ml. Il morbo di Alzheimer (AD) è il più comune disordine neurodegenerativo dell’età senile. Ad oggi l’unico trattamento per l’AD è basato su farmaci che possano mantenere adeguati livelli di acetilcolina circolanti e tali sostanze agiscono attraverso l’inibizione delle due maggiori forme di colinesterasi: acetilcholinesterasi (AChE) and butirilcholinesterasi (BChE). L’estratto in n-esano dei bulbi, testato attraverso l’Ellman’s method [3], ha mostrato una potente attività inibitoria con valori di IC50 di 104.9 e 128.1 ug/mL per AChE e BChE, rispettivamente. [1]. Pieroni A et al., Food for two seasons: culinary uses of non-cultivated local vegetables and mushrooms in a south Italian village. Intern J Food Sci Nutr 2005, 56:245-272; [2]. Drewnoswski A et al., Bitter taste, phytonutrients, and the consumer: a review. Am J Clin Nutr 2000, 72:1424-1435; [3]. Menichini F et al., Acetylcholinesterase and butyrylcholinesterase inhibition of ethanolic extract and monoterpenes from Pimpinella anisoides V Brig. (Apiaceae). Fitoterapia 2009, 80:297-300.
Attività radical scavenging e inibizione delle colinesterasi di bulbi di Leopoldia comosa (L.)
LOIZZO, Monica Rosa;ROSA TUNDIS;MARCO BONESI;
2010-01-01
Abstract
Leopoldia comosa is a spontaneous plant growing in all Mediterranean area including Calabria where its bulbs known as “cipudizze” were used in traditional gastronomy and used flavoured with garlic, chilli pepper, or fried with potatoes [1,2]. Bulbs (300 g) were extracted with EtOH through maceration. In order to operate a separation of lipophilic compounds, the total extract was solubilized with MeOH/H2O (8:2) and extracted with n-hexane. The ethanol extract showed a total phenols content of 56.6 mg chlorogenic acid equivalent per g of extract while a flavonoids content of 23.4 mg quercetin equivalent per g of extract. Ethanolic extract demonstrated the strongest radical scavenging activity with an IC50 value of 40.9 ug/ml. Alzheimer’s disease (AD) is the most common form of neurodegenerative disorders. Actually, AD treated by the use of agents which restore the level of acetylcholine through inhibition of both two major forms of cholinesterase: acetylcholinesterase (AChE) and butyrylcholinesterase (BChE). Bulbs n-hexane extract exhibited the highest bioactivity tested using Ellman's method [3] with IC50 values of 104.9 and 128.1 ug/mL for AChE and BChE, respectively. [1]. Pieroni A et al., Food for two seasons: culinary uses of non-cultivated local vegetables and mushrooms in a south Italian village. Intern J Food Sci Nutr 2005, 56:245-272; [2]. Drewnoswski A et al., Bitter taste, phytonutrients, and the consumer: a review. Am J Clin Nutr 2000, 72:1424-1435; [3]. Menichini F et al., Acetylcholinesterase and butyrylcholinesterase inhibition of ethanolic extract and monoterpenes from Pimpinella anisoides V Brig. (Apiaceae). Fitoterapia 2009, 80:297-300.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.