2.2.4. Freeze drying
Two hundred grams of A. bisporus slices samples was first frozen
at −30 ± 2 °C, and FD was performed in a lab-scale freeze dryer
(FD-1A-50, Beijing Boyikang Laboratory Instruments Co., Ltd, China) at
−50 °C with a chamber pressure of 15 Pa until constant weight was
obtained with 4.28% ± 0.47% (w.b.) water content. One FD experiment
was performed for each treatment (NOB, HWB and MWB), and several
samples from each experiment were used for later tests.
2.2.4. Freeze dryingTwo hundred grams of A. bisporus slices samples was first frozenat −30 ± 2 °C, and FD was performed in a lab-scale freeze dryer(FD-1A-50, Beijing Boyikang Laboratory Instruments Co., Ltd, China) at−50 °C with a chamber pressure of 15 Pa until constant weight wasobtained with 4.28% ± 0.47% (w.b.) water content. One FD experimentwas performed for each treatment (NOB, HWB and MWB), and severalsamples from each experiment were used for later tests.
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