Journal
FOOD HYDROCOLLOIDS
Volume 86, Issue -, Pages 11-17Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodhyd.2017.11.023
Keywords
Soy protein; Chicken feathers; Valorization; Hydrolyzed keratin; Films
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Funding
- University of the Basque Country UPV/EHU [PPG17/18]
- Provincial Council of Gipuzkoa [OF215/2016 (ES)]
- Euskara Errektoreordetza (UPV/EHU)
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Soy protein isolate (SPI) and hydrolyzed keratin (HK) were employed to develop compression molded films. In contrast to other studies, in which toxic chemicals or expensive methods are usually employed to hydrolyze feather keratin, in this research a novel approach was addressed. A solution of NaOH (1 M) was employed and the use of high temperatures was avoided during the process in order to obtain a simple, environmentally friendly and inexpensive method to hydrolyze feather keratin, which can be used for the development of thermoplastic films. In addition to the valorization of agro-industrial waste, the main aim of the incorporation of hydrolyzed feather keratin into film forming formulations was to increase the sulfur content and, thus, the ability to form disulphide bonds, improving the chemical and thermal stability of the resulting films. (C) 2017 Elsevier Ltd. All rights reserved.
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