Title:	Sustainable Biopolymer Films from Amazonian Tambatinga Fish Waste: gelatin extraction and performance for food packaging applications.
Authors:	PROCOPIO, F. R. LOURENÇO, R. V. BITTANTE, A. M. Q. B. SOBRAL, P. J. do A. JACINTHO, M. A. C.
Affiliation:	FERNANDA RAMALHO PROCOPIO, FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO; RODRIGO VINÍCIUS LOURENÇO, UNIVERSIDADE DE SÃO PAULO; ANA MÔNICA QUINTA BARBOSA BITTANTE, UNIVERSIDADE DE SÃO PAULO; PAULO JOSÉ DO AMARAL SOBRAL, UNIVERSIDADE DE SÃO PAULO; MANUEL ANTONIO CHAGAS JACINTHO, CPPSE.
Date Issued:	2025
Citation:	Foods, v. 14, n. 22, 3866, 2025.
Description:	Abstract: Tambatinga (Colossoma macropomum × Piaractus brachypomus), a hybrid Amazonian fish recognized for its superior growth performance, represents a valuable and sustainable source of collagen-rich raw material. Due to its tropical origin, the species’ skin may contain higher levels of amino acids, which can enhance the functional and structural properties of gelatin derived from it. The valorization of fish processing residues for biopolymer production not only mitigates environmental impacts but also reinforces the principles of the circular economy within aquaculture systems. This study explores the development of biopolymer films from Tambatinga skin, an abundant by-product of Brazilian aquaculture. The skins were cleaned and subjected to a hot water–acid extraction process to obtain gelatin. The extracted gelatin exhibited high proline and hydroxyproline contents (12.47 and 9.84 g/100 g of amino acids, respectively) and a Bloom strength of 263.9 g, confirming its suitability for film formation. Films were prepared using 2 g of gelatin per 100 g of film-forming solution, with glycerol added at 10 and 20 g/100 g of gelatin. The resulting films were transparent, flexible, and showed uniform surfaces. Increasing the glycerol concentration reduced tensile strength (from 59.4 to 37.9 MPa) but improved elongation at break (from 116% to 159.1%) and modified the films’ thermal behavior. Moreover, Tambatinga gelatin films demonstrated excellent UV-blocking performance (below 300 nm) and lower water vapor permeability compared to other gelatin-based films reported in the literature. These findings highlight the potential of fish skin—typically regarded as industrial waste—as a renewable and high-value raw material for the production of sustainable biopolymers. This approach supports resource efficiency, waste reduction, and the broader goals of sustainable development and circular bioeconomy.
Thesagro:	Biofilme Gelatina Embalagem Peixe
NAL Thesaurus:	Fish processing Fish products Proteins Edible films Sustainable development Gelatin Biopolymers Hybrids Raw materials Glycerol
Keywords:	Filme sustentável Biopolímero Tambatinga
ISSN:	2304-8158
DOI:	https://doi.org/10.3390/foods14223866
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPPSE)