Extracción acuosa asistida por enzimas compuestas de aceite de chufa: optimización de la microencapsulación y mejora...

Área de la Ciencia:

• Food Science; Biotechnology; Chemical Engineering

Sus antecedentes:

• Tiger nut oil (TNO) is rich in beneficial unsaturated fatty acids but prone to oxidative deterioration during storage.; Traditional extraction methods often result in low yields, limiting TNO's industrial application.; Improving TNO's stability is crucial for its widespread use in food and cosmetic industries.

Objetivo del estudio:

• To optimize a composite enzyme-assisted aqueous enzymatic extraction (AEE) process for enhanced TNO yield and quality.; To develop a microencapsulation strategy using maltodextrin and whey protein to improve TNO's oxidative stability.; To evaluate the effectiveness of microencapsulation in preserving TNO's physicochemical properties and antioxidant capacity during storage.

Principales métodos:

• Optimized composite enzyme-assisted aqueous enzymatic extraction (AEE) parameters.; Developed microcapsules using maltodextrin and whey protein with soy lecithin as an emulsifier.; Assessed encapsulation efficiency and conducted storage stability tests (acid value, peroxide value, antioxidant capacity) over 30 days at 25°C.

Principales resultados:

• Optimized AEE achieved a high oil yield of 22.5 ± 0.21% with 73.24% unsaturated fatty acids.; Microencapsulation using a maltodextrin:whey protein ratio of 3:2 and a wall-to-core ratio of 1:10 yielded an encapsulation efficiency of 79.87%.; Microencapsulated TNO exhibited significantly reduced rates of increase in acid and peroxide values and maintained higher antioxidant capacity compared to unencapsulated TNO during storage.

Conclusiones:

• The integrated approach of optimized AEE and microencapsulation provides a green and scalable method to enhance tiger nut oil stability.; Maltodextrin-whey protein microcapsules effectively protect TNO from oxidation, addressing a key limitation for its industrial use.; This strategy enables the large-scale application of tiger nut oil in the food and cosmetics sectors.