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Production and characterization of seed crystals based on mixtures of fully hydrogenated soybean oil (hardfat) and other oils to application in chocolates

Grant number: 15/21093-2
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): February 01, 2016
Effective date (End): January 31, 2017
Field of knowledge:Engineering - Chemical Engineering
Principal Investigator:Priscilla Efraim
Grantee:Júlia Delgado Arid
Host Institution: Faculdade de Engenharia de Alimentos (FEA). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil


The demand for techniques that accelerate or make unnecessary the chocolate tempering step is increasing to optimize the production. The tempering consists of a pre-crystallization on which small amount of cocoa butter crystals in the stable polymorph ² are produced, providing good quality characteristics as gloss, texture, melting and undercut of chocolate, and prevent the formation of fat-bloom defect. The alternative technique of tempering called seeding is based on previous production of fat based seed crystals in the more stable polymorphic form ², which are added directly to chocolate inducing the crystallization of the more stable forms. Most studies and patents involving the development or application of seeds employ cocoa butter feedstock. A previous study used fully hydrogenated oils, known as hardfats, a raw material of low cost, in seed production by spray cooling technique. However, the crystals produced had unstable polymorphic ± habit, which is not desirable in application in chocolate. This research project aimed at the production and characterization of seed crystals obtained by spray cooling using mixtures of soybean hardfat and D-limonene or canola oil, which have demonstrated accelerating the polymorphic transition of fats. It will be tested different concentrations of oil added and the seeds will be characterized by several analytical techniques.

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Filed patent(s) as a result of this research project

PROCESSO PARA A OBTENÇÃO DE SEMENTES DE CRISTALIZAÇÃO, SEMENTES DE CRISTALIZAÇÃO E USO DAS MESMAS BR1020160178690 - Universidade Estadual de Campinas (UNICAMP) . Camilia Aoyagui Dos Santos; Crystopher Stanley Carpenter; Ana Paula Badan Ribeiro; Priscilla Efraim - July 2016, 29

PROCESSO PARA A OBTENÇÃO DE SEMENTES DE CRISTALIZAÇÃO, SEMENTES DE CRISTALIZAÇÃO E USOS DAS MESMAS PCT/BR2017/000084 - Universidade Estadual de Campinas (UNICAMP) . Priscilla Efraim; Crystopher Stanley Carpenter; Ana Paula Badan Ribeiro; Camilia Aoyagui dos Santos - July 2017, 28