State diagram of whole milk for freeze-drying application

•Methodology to build phase diagram.•Whole milk/water phase diagram.•Determination by cryomicroscopy of the collapse temperature. The state diagram is a key parameter when optimizing a freeze-drying cycle, as it allows us to set the optimum processing temperature for a specific product. The purpose...

Full description

Saved in:
Bibliographic Details
Published in:Journal of crystal growth 2023-11, Vol.622, p.127349, Article 127349
Main Authors: Alla, Fadwa, Gagnière, Émilie, Agusti, Géraldine, Perez Rodriguez, Maria, Rich, Anouar, Mountadar, Mohammed, Siniti, Mostapha, Cogné, Claudia
Format: Article
Language:English
Subjects:
A1. Characterization
A1. Freeze-drying
A1. Optical microscopy
A1. Solidification
A1. State diagrams
Chemical Sciences
Food engineering
Life Sciences
or physical chemistry
Theoretical and
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•Methodology to build phase diagram.•Whole milk/water phase diagram.•Determination by cryomicroscopy of the collapse temperature. The state diagram is a key parameter when optimizing a freeze-drying cycle, as it allows us to set the optimum processing temperature for a specific product. The purpose of this work is to provide some thermodynamic and physicochemical data for optimizing the freeze-drying cycle of whole milk. Freezing point measurements were determined using differential scanning calorimetry and cryoscopy methods, and glass transitions were evaluated by DSC. The endothermic peak was used as the equilibrium freezing point, a variation from 273.93 K to 264.92 K was detected when the dry matter content varied from 0 to 75%. Tg midpoint temperature was used as glass transition of dry mater. Furthermore, Fox and Gordon-Taylor equations were used to predict the glass transition curve to determine Tg', this temperature was used as an approximation of the critical temperature Tc. Collapse temperature was determined using the freeze-drying microscopy setup.
ISSN:0022-0248
1873-5002
DOI:10.1016/j.jcrysgro.2023.127349