Abstract The effects of a naturally occurring Patagonian strain the white-rot fungus Pleurotus ostreatus on Araucaria araucana wood lignans was evaluated. Lignans colonized and non-colonized shavings activity fungal ligninolytic enzymes were studied. identified using gas chromatography with mass spectrometry detector. Only eudesmin lignan resisted biological degradation. highest laccase 0.111 ±...

Phytoestrogens Hepatocellular carcinoma Chemoprevention Hepatocellular carcinoma (HCC) is the commonest primary malignant cancer of the liver and the third leading cause of cancer mortality worldwide. Statistically liver cancer is the fifth most common cancer in men and the 7th most common cancer in women. The major common risk factors for hepatocellular are hepatitis B (HBV) and hepatitis C vi...

Lignans are mainly dimers of 4-hydroxycinnamic acids (HCAs) and reduced analogs thereof which are produced in Nature through phenol oxidative coupling (POC) as the primary C-C or C-O bond-forming reaction under the action of the enzymes peroxidases and laccases. They present a large structural variety and particularly interesting biological activities, therefore, significant efforts has been de...

Lignans are a large class of natural products that have been isolated from many plants. They reveal diverse biological activities, especially antiviral and antitumor properties. From Piper cubeba, lignans of several classes can be isolated from the roots, rhizomes, stems, leaves, seeds, and fruits. Among its various chemical constituents, (-)-cubebin and (-)-hinokinin are found in significant q...

The present article describes the chemical characteristics such as pH of aqueous extract, fluorescence, aqueous and alcoholic extractives, lignans and TLC profile of aqueous extract of Bhuiavli (Phyllanthus niruri).

Phytochemical studies of whole plant of Phyllanthus debilis Klein.ex.willd (Euphorbiaceae) reveals the presence of phytosterols, lignans, glycosides and absence of saponin, triterpenoids, tannins and alkaloids have been reported in this plant for the first time.

Lignans and proanthocyanidins are plant polyphenols that have shown protective properties against colorectal neoplasms in some human studies. Using logistic regression, we estimated odds ratios (ORs) and 95% confidence intervals (CIs) to prospectively evaluate the association between lignan and proanthocyanidin intake, estimated from databases linked to a food frequency questionnaire, and adeno...