Int J Med Sci 2014; 11(6):602-607. doi:10.7150/ijms.8341
Energy and Nutritional Composition of Tiger Milk Mushroom (Lignosus tigris Chon S. Tan) Sclerotia and the Antioxidant Activity of Its Extracts
1. Department of Molecular Medicine, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.
2. Ligno Biotech Sdn. Bhd., 43300 Balakong Jaya, Selangor, Malaysia.
Yap HYY, Aziz AA, Fung SY, Ng ST, Tan CS, Tan NH. Energy and Nutritional Composition of Tiger Milk Mushroom (Lignosus tigris Chon S. Tan) Sclerotia and the Antioxidant Activity of Its Extracts. Int J Med Sci 2014; 11(6):602-607. doi:10.7150/ijms.8341. Available from http://www.medsci.org/v11p0602.htm
The Lignosus is a genus of fungi that have useful medicinal properties. In Southeast Asia, three species of Lignosus (locally known collectively as Tiger milk mushrooms) have been reported including L. tigris, L. rhinocerotis, and L. cameronensis. All three have been used as important medicinal mushrooms by the natives of Peninsular Malaysia. In this work, the nutritional composition and antioxidant activities of the wild type and a cultivated strain of L. tigris sclerotial extracts were investigated. The sclerotia are rich in carbohydrates with moderate amount of protein and low fat content. Free radical scavenging activities of L. tigris sclerotial extracts correlate with their phenolic content, which ranges from 6.25 to 45.42 mg GAE/g extract. The FRAP values ranged from 0.002 to 0.041 mmol/min/g extract, while the DPPH•, ABTS•+, and superoxide anion (SOA) scavenging activities ranged from 0.18 to 2.53, 0.01 to 0.36, and -4.53 to 10.05 mmol Trolox equivalents/g extract, respectively. L. tigris cultivar shows good prospect to be developed into functional food due to its good nutritional value and potent SOA scavenging activity.
Keywords: Lignosus tigris, Tiger milk mushroom, nutrients, phenolics, antioxidants