The water absorption characteristics of Lessonia trabeculata stipe and the effects of smashing and squeezing pretreatment methods on water absorption were investigated. The results showed that the critical penetration distance of water in the stipe was about 2 mm. When the size of stipe particles was twice times less than the critical penetration distance, the algal particles could be sufficiently penetrated and saturated by water in 6 h. As the crack of stipe was grown and enlarged with the increase of squeezing pressure, the water absorption rate increased to 250% at 149 MPa in 6 h. Since stipe was sufficiently soaked in water after pretreatment, the alkaline extraction speed could be remarkably raised. Especially when some cell walls were destroyed by squeezing, the extraction speed was the highest during the earlier 3 h of extraction.
Chuanfeng AN Zhihui WANG Bin WANG Fengji HUI Wei CONG
. Pretreatment Method of Lessonia trabeculata Stipe[J]. The Chinese Journal of Process Engineering, 2017
, 17(5)
: 1059
-1065
.
DOI: 10.12034/j.issn.1009-606X.217152
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