Développement de matrices alimentaires permettant de protéger des substances actives lors des traitements thermiques

Abstract : Dehydrated products make it possible to optimize the storage and transport of food products. Food powder mixes distributed to the consumer display nutritional guarantees in terms of qualitative and quantitative inputs. However, the nutritional value of the product after reconstitution and cooking, is not guaranteed. This PhD work focuses on the evaluation of vitamins losses due to food processing in relation to the effect of the food matrix. Losses measured after the heat treatment were not negligible, making the encapsulation necessary to meet the objective of the thesis to guarantee a sufficient vitamins content after reconstitution and heat treatment of the dehydrated food product. Different matrices have been tested at the laboratory scale and industrial scales. Some of these matrices, such as dairy proteins and starch, have proved to be very interesting and allowed the preservation of vitamin C during heat treatment. To finalize the study, it was essential to take into account that the vitamin C-encapsulating powders will be stored before and after their distribution. To ensure that they maintain a sufficient vitamin C content during storage, accelerated aging has been carried out. Thus this thesis made it possible to provide concrete answers to the posed industrial problem, which was to guarantee the vitamin C content of the commercial products after reconstitution and heat treatment
Complete list of metadatas

https://hal.univ-lorraine.fr/tel-01935513
Contributor : Thèses Ul <>
Submitted on : Monday, November 26, 2018 - 5:18:36 PM
Last modification on : Tuesday, November 27, 2018 - 1:22:21 AM

Identifiers

  • HAL Id : tel-01935513, version 1

Collections

Citation

Yoana Nikolova. Développement de matrices alimentaires permettant de protéger des substances actives lors des traitements thermiques. Ingénierie des aliments. Université de Lorraine, 2017. Français. ⟨NNT : 2017LORR0102⟩. ⟨tel-01935513⟩

Share

Metrics

Record views

20