Green tea- A Healthy sip.

After water, tea is the most consumed popular drink in the world. Green tea which is a leading beverage in the Far East for thousands of years is regarded as a health product. It is nothing but a non-fermented tea which contains more catechins, than black tea or oolong tea. Catechins are strong antioxidants with its additional content of certain minerals and vitamins increasing its antioxidant potential. High-molecular-weight polyphenols isolated from green tea which includesepigallocatechin 3 gallate (EGCG) constitute the most interesting components in green tea leaves. Th e aqueous extract or the major polyphenols of green tea possess cariostatic, antimutagenic, antidiabetic, antioxidant, antibacterial, anti infl ammatory, antitumor, hypocholesterolemic, as well as cancer-preventive activities in a variety of experimental animal models system and have been demonstrated in various studies.

Palăśa (Butea monosperma (Lamk.) Taub.) and its medico-historical study.

Palăśa (Butea monosperma (Lamk.) Taub.) is considered sacred both by Hindus and Buddhists. It is known to the Hindus under the Sănskrt name Palăśa as it possesses valuable medicinal properties. This sacred tree is being called the treasurer of the gods and of sacrifice. It grows throughout India except in very arid parts and is a medium sized deciduous tree. Parts used are bark, leaf, flower, seed and gum. It is mainly useful as antihelmenthic appetizer, aphrodisiac, laxative etc. Thus its medico- historical aspects are being presented in this paper.

History of cannabis as a medicine: a review

Antes da Era Cristã, a cannabis foi utilizada na Ásia como medicamento, com grande importância na Índia. A introdução da cannabis na Medicina Ocidental ocorreu em meados do século XIX, atingindo o clímax na última década deste século, com a disponibilidade e o uso de extratos e tinturas da cannabis. Nas primeiras décadas do século XX, o uso médico da cannabis no Ocidente diminuiu significativamente, em grande parte pela dificuldade na obtenção de resultados consistentes de amostras da planta com diferentes potências. A identificação da estrutura química de componentes da cannabis e a possibilidade de se obter seus constituintes puros foram relacionadas a um aumento significativo no interesse científico pela planta, desde 1965. Este interesse foi renovado nos anos 90, com a descrição dos receptores de canabinóides e a identificação de um sistema canabinóide endógeno no cérebro. Usos terapêuticos. Um novo e mais consistente ciclo de uso dos derivados de cannabis como medicamento começa, já que a sua eficácia e segurança no tratamento começam a estar cientificamente provados.

Looking at the origins

This introductory article offers a broad overview over the historical facts which, in the course of one hundred years - from the mid-nineteenth to the mid-twentieth century - have led to the present vigorous state of Natural Products Research in Brazil, as reflected in the contents of the present two issues of Ciência e Cultura, Journal of the Brazilian Association for the Advancement of Science.