Nauka Przyroda Technologie

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Dorota Cais-Sokolińska, Romualda Danków, Jan Pikul
Sorption properties of model lyophilizates of mare milk
Summary.

The aim of the study was to assess sorption properties based on the course and kinetics of a sorption isotherm of mare milk lyophilizate packaged in nitrogen atmosphere in a packet made from chalk overlay paper coated with polyethylene type NCPE-7518. Lyophilizates were stored for 6 months at 24±1°C and 35-40%RH. Storage of lyophilizate resulted in an increase in water content by over 7% and at the same time in an increase in water activity by over 12%. Fitting of the course consistent with the pattern of isotherms type II according to the BET classification was performed on the basis of a curve following the procedure of smoothing least squares weighed by distance. As a result of 16 h sorption lyophilizate not subjected to storage increased its weight to 0.28 g H2O gs/s. In the stored lyophilizate an increment in water content was by 29% smaller. A marked increase in the increment rate of water content was found during the first 2 h of sorption. The lyophilizate not subjected to storage at that time reached 82% total increment in water content, while for stored lyophilizate it was 65%.

Key words: mare milk, lyophilizate, water activity, sorption
PDFFull text available in Polish in Adobe Acrobat format:
http://www.npt.up-poznan.net/tom3/zeszyt4/art_113.pdf

For citation:

MLA Cais-Sokolińska, Dorota, et al. "Właściwości sorpcyjne modelowych liofilizatów mleka klaczy." Nauka Przyr. Technol. 3.4 (2009): #113.
APA Dorota Cais-Sokolińska, Romualda Danków, Jan Pikul (2009). Właściwości sorpcyjne modelowych liofilizatów mleka klaczy. Nauka Przyr. Technol. 3 (4), #113
ISO 690 CAIS-SOKOLIńSKA, Dorota, DANKóW, Romualda, PIKUL, Jan. Właściwości sorpcyjne modelowych liofilizatów mleka klaczy. Nauka Przyr. Technol., 2009, 3.4: #113.
Corresponding address:
Dorota Cais-Sokolińska
Katedra Technologii Mleczarstwa
Uniwersytet Przyrodniczy w Poznaniu
ul. Wojska Polskiego 31/33
60-624 Poznań
Poland

e-mail: cais@up.poznan.pl
Accepted for print: 29.09.2009