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Production of microbial protein from tree bark by Phanerochaete chrysosporium
Author(s) -
Daugulis A. J.,
Bone Derek H.
Publication year - 1978
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260201010
Subject(s) - phanerochaete , chrysosporium , bark (sound) , maple , lignin , botany , chemistry , substrate (aquarium) , food science , fermentation , biology , ecology
Phanerochaete chrysosporium was grown in fermentors on NaOH‐extracted maple, pine, and cedar barks at the optimum substrate concentration of 1% (w/v). The yields (mg protein/liter) on maple, pine, and cedar were 1500, 1200, and 880, respectively, which are probably due to the different lignin contents of the barks. Lignin is not utilized. The productivities at 30°C obtained for pine (4.07 × 10 −2 g protein/liter hr) and cedar (2.63 × 10 −2 g protein/liter hr) barks were greater than for maple (2.63 × 10 −2 g protein/liter hr). The substrate (bark) was the limiting component of the fermentation. Over the 26–38°C temperature range protein productivity increased by a factor of three (1.55 × 10 −2 vs. 4.61 × 10 −2 g protein/liter hr) for maple bark. Low agitation rates resulted in an overproduction of cellulase and reduced levels of microbial protein.