Characterization and oxidation stability of spray-dried emulsions with omega-3 oil and buttermilk processed by ultra-high-pressure homogenization (UHPH)
Varela, Carolina (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Aghababaei, Fatemeh (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Cano-Sarabia, Mary (Institut Català de Nanociència i Nanotecnologia)
Turitich, Libni (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Trujillo, Antonio-José (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Ferragut, Victoria (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)

Date:	2022
Abstract:	Integrating functional ingredients, such as buttermilk and omega-3 rich oils, in spray-dried emulsions (SDE) is a suitable way to incorporate these ingredients in dairy products to substitute dairy fat and increase their added value. Ultra-high-pressure homogenization (UHPH) processing of liquid emulsions considerably improves stability compared to the conventional homogenization (CH) process. With this premise, SDE were produced while comparing CH (30 MPa) and UHPH (100 or 200 MPa) processing of feeding emulsions. Emulsions were formulated with (50:50 chia:sunflower) oil, whole commercial buttermilk (BM), and maltodextrin (MD) as wall materials. Further spray drying of emulsions was then conducted. Obtained SDE were characterized in terms of water content, Aw (water activity), flowing properties, water solubility, encapsulation efficiency (EE), color, and microstructure. Oxidation stability of SDE was analyzed in accelerated oxidation conditions at 50 ◦ C for one month for primary and secondary oxidation analysis evolution on days 1, 7, 14, and 31 of storage. Results showed better ability of BM as encapsulating agent in UHPH-processed emulsions with 7% of BM. This improvement was especially observed in the flowing properties and encapsulating efficiency. Seven percent BM UHPH-treated SDE showed the best primary oxidation stability during storage, while the 4% BM-UHPH-treated SDE exhibited better secondary oxidative stability.
Grants:	Ministerio de Ciencia e Innovación AGL2017-83331-R Ministerio de Economía y Competitividad SEV-2017-0706
Note:	Altres ajuts: acords transformatius de la UAB
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Ultra-high-pressure homogenization ; Spray-dried emulsions ; Buttermilk ; Chia oil
Published in:	LWT, 2022 , ISSN 0023-6438

DOI: 10.1016/j.lwt.2022.113493

8 p, 2.2 MB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles