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Comparative antioxidant and bioavailability studies of Vitamin C in Phyllanthus emblica Linn. and its combinations with Piper nigrum Linn. and Zingiber officinale Roscoe
Somasekhar, Vanita; Ashok, Purnima; Kameswari, Sri Adibatla Renuka; Rajendran, Ramaswamy; Singh, Rajpreet.
  • Somasekhar, Vanita; KLE University's College of Pharmacy. Bengaluru. IN
  • Ashok, Purnima; KLE University's College of Pharmacy. Bengaluru. IN
  • Kameswari, Sri Adibatla Renuka; KLE University's College of Pharmacy. Bengaluru. IN
  • Rajendran, Ramaswamy; KLE University's College of Pharmacy. Bengaluru. IN
  • Singh, Rajpreet; KLE University's College of Pharmacy. Bengaluru. IN
Braz. j. pharm. sci ; 52(1): 35-43, Jan.-Mar. 2016. tab, graf
Article in English | LILACS | ID: lil-789077
ABSTRACT
ABSTRACT Phyllanthus emblica Linn. (amla) is used in Ayurveda, the ancient Indian system of medicine and its major constituent is vitamin C which has effective free radical scavenging property. The purpose of this study was to evaluate the in vitro antioxidant activity and the bioavailability profile of vitamin C in amla and its combinations with piperine and ginger in comparison to synthetic vitamin C using New Zealand rabbits. In vitro antioxidant activity studies of synthetic vitamin C, amla, amla with piperine and amla with ginger were carried out using different models such as 2,2-Diphenyl-1-picrylhydrazyl, Nitric Oxide, Hydrogen peroxide scavenging methods, Total reductive capability and Oxygen Radical Absorbance Capacity estimation. The study results showed that synthetic vitamin C, amla, amla with piperine and amla with ginger possess significant in vitro antioxidant activity. For bioavailability studies, synthetic vitamin C, amla, amla with piperine and amla with ginger 100 mg/kg, were administered orally and the serum samples were analyzed by HPLC at 0, 1, 2, 3, 4, 6, 8, 10, 12 and 24 hours. Bioavailability studies revealed that amla with piperine combination has higher concentration of vitamin C when compared to synthetic vitamin C. This is probably due to presence of piperine, which is a bioavailability enhancer. The present study supports the fact that amla with piperine combination can be an alternative to synthetic vitamin C.
RESUMO
RESUMO Phyllanthus emblica Linn. (amla) é utilizada na medicina Ayurveda, medicina da Índia antiga e seu principal constituinte é a vitamina C, que possui propriedade sequestrante de radicais livres. O propósito deste estudo foi avaliar a atividade antioxidante in vitro e o perfil de biodisponibilidade da vitamina C na amla e suas combinações com piperina e gengibre em comparação com a vitamina C sintética, utilizando coelhos da Nova Zelândia. Os estudos de atividade antioxidante in vitro de vitamina C sintética, amla, amla com piperina e amla com gengibre foram realizados utilizando-se diferentes modelos para sequestrantes, como 2,2-difenil-1-picrilidrazil, óxido nítrico, peróxido de hidrogênio, capacidade redutiva total e a estimativa da capacidade de absorvância do radical oxigênio. Os resultados do estudo mostraram que vitamina C sintética, amla, amla com piperina e amla com gengibre possuem atividade antioxidante in vitro significativa. Para os estudos de biodisponibilidade, administraram-se oralmente vitamina C sintética, amla, amla com piperina e amla com gengibre 100 mg/kg e as amostras de soro foram analisadas por CLAE em 0, 1, 2, 3, 4, 6, 8, 10, 12 e 24 horas. Os estudos de biodisponibilidade revelaram que a associação de amla com piperina tem maior concentração de vitamina C, quando comparada com a vitamina C sintética. Este efeito é provavelmente devido à presença de piperina, que é intensificador de biodisponibilidade. O presente estudo apoia o fato de que a associação de amla e piperina pode ser uma alternativa para a vitamina C sintética.
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Full text: Available Index: LILACS (Americas) Main subject: Ascorbic Acid / Phyllanthus emblica / Piper nigrum Limits: Animals Language: English Journal: Braz. j. pharm. sci Year: 2016 Type: Article Affiliation country: India Institution/Affiliation country: KLE University's College of Pharmacy/IN

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Full text: Available Index: LILACS (Americas) Main subject: Ascorbic Acid / Phyllanthus emblica / Piper nigrum Limits: Animals Language: English Journal: Braz. j. pharm. sci Year: 2016 Type: Article Affiliation country: India Institution/Affiliation country: KLE University's College of Pharmacy/IN