alexa Nutritional, Antioxidant and Antibacterial Properties of Tirmania nivea, A Wild Edible Desert Truffle from Tunisia Arid Zone
ISSN: 2167-0412

Medicinal & Aromatic Plants
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Research Article

Nutritional, Antioxidant and Antibacterial Properties of Tirmania nivea, A Wild Edible Desert Truffle from Tunisia Arid Zone

Amina Hamza1, Hamida Jdir2 and Nacim Zouari3*

1Range Ecology Laboratory, Arid Lands Institute of Medenine, Medenine, Tunisia

2Laboratory of Enzyme Engineering of Lipases and Biochemistry, Engineering National School of Sfax (ENIS), University of Sfax, Sfax, Tunisia

3High Institute of Applied Biology of Medenine, University of Gabes, Medenine, Tunisia

*Corresponding Author:
Zouari N
High Institute of Applied Biology of Medenine
Medenine, University of Gabes, Medenine, Tunisia
Tel: +21624862279
E-mail: [email protected]

Received date: June 22, 2016; Accepted date: July 01, 2016; Published date: July 04, 2016

Citation: Hamza A, Jdir H, Zouari N (2016) Nutritional, Antioxidant and Antibacterial Properties of Tirmania nivea, A Wild Edible Desert Truffle from Tunisia Arid Zone. Med Aromat Plants 5:258. doi:10.4172/2167-0412.1000258

Copyright: © 2016 Hamza A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Nutritional composition, antioxidant and antibacterial properties of Tirmania nivea, a desert truffle largely distributed in Southern Tunisia, were evaluated. Carbohydrates were the most abundant macronutrients (57.83 g/100 g DM) followed by proteins (28.81 g/100 g DM) in T. nivea truffle. The ash content was 5.06 g/100 g DM, and potassium, calcium, phosphorus, magnesium and iron were found to be particularly abundant. The results of ascorbic acid, total carotenoids and total anthocyanins expressed on a dry mass truffle were 10.63 mg/100 g, 1.17 mg/100 g and 29.1 mg/100 g, respectively. Organic extracts of T. nivea contained relatively important amounts of total phenolics and flavonoids. The methanolic extract displayed the highest DPPH• radical-scavenging activity (IC50: 0.26 mg/ml) and lipid peroxidation inhibitory activity (IC50: 0.51 mg/ml), and also exhibited remarkable inhibitory activity against seven species of bacteria whose minimum inhibitory concentration values ranged from 0.36 to 1.32 mg/ml.

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