RT info:eu-repo/semantics/article T1 Adjustable Gel Texture of Recovered Crude Agar Induced by Pressurized Hot Water Treatment of Gelidium sesquipedale Industry Waste Stream: An RSM Analysis A1 Diop, Cherif Ibrahima Khalil A1 Beltrán Calvo, Sagrario A1 Jaime Moreno, Isabel A1 Sanz Díez, Mª Teresa K1 Agar K1 Gelidium sesquipedale waste stream K1 Food industry K1 Pressurized hot water extraction K1 RSM K1 Texture K1 Alimentos K1 Food K1 Ingeniería química K1 Chemical engineering AB A significant amount of bioactive compound-rich solid waste is released during the industrial phycocolloid-centric extraction of Gelidium sesquipedale. The impact of mild pressurized hot water extraction on repurposing this waste for the recovery of agar with an adjustable gel texture is investigated. A two-factor interaction response surface model assessed the influences of the operating temperatures (80 to 130 °C), times (45 and 150 min), pressures (1 to 70 bar), and algae concentrations (3 to 10% (w:v)). At a temperature of 100 °C, a pressure of 10.13 bar, a recovery time of 45 min, and a 10% algae concentration, the working parameters were considered ideal (w:v). Agar with a hardness of 431.6 g, an adhesiveness of −13.14 g.s−1, a springiness of 0.94, a cohesiveness of 0.63, and a gumminess of 274.46 g was produced under these conditions. A combined desirability of 0.78 was obtained for the exposed technology that retrieved gels with a minimum agar yield of 10% and thermal hysteresis between 39 ± 1 and 52 ± 0.5 °C. The fitted design can provide a high techno-commercial value to the agri-food industrial waste stream. PB MDPI SN 2304-8158 YR 2022 FD 2022-07 LK http://hdl.handle.net/10259/6767 UL http://hdl.handle.net/10259/6767 LA eng NO This research was funded by the European Commission, Horizon 2020 program through the Marie-Curie Individual Fellowship (H2020-MSCA-IF-2019), with regards to the ALGWAS-BIOR project (Grant agreement number 898804). DS Repositorio Institucional de la Universidad de Burgos RD 28-mar-2024