Templating effects of dipalmitin on soft palm mid-fraction crystals

Autor(es)

Teodoro da Silva, Thais Lomonaco ; Fontenele Domingues, Maria Aliciane ; Chiu, Ming Chih ; Guaraldo Goncalves, Lireny Aparecida

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF FOOD PROPERTIES; v. 20, p. 13-pg., 2017-01-01.

Resumo

The crystallization of lipids has important implications for the industrial processing of food products, such as chocolates, margarines, spreads, confectionery, as well as bakery and dairy products. Thus, blends of soft palm mid-fraction (PMF) and dipalmitin (PP) containing PP of 0.5 g/100 g and 1.0 g/100 g were investigated under stabilization time and conditions for controlling and improving the crystallization step of fat during fat modulation. Crystallization results showed by reducing the Avrami parameters t(sfc), t(1/2), and k, the addition of PP accelerated the crystallization process of PMF. Changes in the crystals morphology observed by polarized light microscopy gave a higher crystallized area and reduced crystals size in the microstructure of the PMF, which was also verified by the increase in melting point and solid fat content (SFC). The addition of PP caused changes in the arrangement of the PMF triacylglycerols (TAGs), by stabilizing the ' stable polymorphic form, thereafter stabilizing the melting profile and the consistency of PMF over time. These results have interesting implications in the fat and oil industry as they allow for the marketing of products with improved crystallization properties and the stabilization of more stable polymorphic forms, expanding the range of applications of slow-crystallizing fats. (AU)

• Processo FAPESP: 09/53006-0 - Modificação, controle e estabilização do comportamento de cristalização e polimorfismo em gorduras, com ênfase na manteiga de cacau e no óleo de palma
• Beneficiário: Theo Guenter Kieckbusch
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 12/10871-6 - Estudo comparativo da influência de emulsificantes ésteres de sorbitana e ésteres graxos de sacarose no comportamento de cristalização e no polimorfismo de manteiga de cacau e em sistema-modelo lipídico
• Beneficiário: Monise Helen Masuchi Buscato
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto