title: Shelf life and storage stability of spray-dried bovine colostrum powders under different storage conditions.
abstract: Spray dried bovine colostrum (SDBC) powders were packaged in aluminium-laminated polyethylene (ALPE) and polyethylene terephthalate (PET) pouches and then stored under different conditions (25 °C and 50 % relative humidity (RH), 4 °C and 40-70 % RH, 50 °C and 20-50 % RH). The shelf life of SDBC powder was evaluated as 425.5 and 86.5 days in ALPE and PET pouches under 25 °C and 50 % RH, respectively. The storage stability of SDBC powder in terms of quality parameters including thiobarbituric acid (TBA), hydroxymethyl furfural (HMF), colour change, moisture content and IgG concentration was studied in both packaging materials under different storage conditions. Results showed that ALPE pouches were more suitable for packaging SDBC powder than PET pouches and storage condition of 4 °C and 40-70 % RH was relative suitable for keeping quality of SDBC powder. The glass transition concept was helpful for evaluating the chemical stability of SDBC powder during storage.
authors.affiliation: Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240 People's Republic of China ; State Key Laboratory of Dairy Biotechnology, Technical Centre, Bright dairy & Food Co., Ltd, Shanghai, 200436 People's Republic of China ; Institute of Refrigeration & Cryogenic Engineering, Shanghai Jiao Tong University, Shanghai, 200240 People's Republic of China.
authors.forename: Huaning
authors.initials: H
authors.lastname: Yu
authors.affiliation: State Key Laboratory of Dairy Biotechnology, Technical Centre, Bright dairy & Food Co., Ltd, Shanghai, 200436 People's Republic of China.
authors.forename: Yuanrong
authors.initials: Y
authors.lastname: Zheng
authors.affiliation: Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240 People's Republic of China ; Bor S. Luh Food safety Research Centre, Shanghai Jiao Tong University, Shanghai, 200240 People's Republic of China.
authors.forename: Yunfei
authors.initials: Y
authors.lastname: Li
keywords: Bovine colostrum powder; Glass transition concept; IgG; Shelf life; Spray drying; Storage stability