Is enzymatic retting efficient on hemp stems or only on fibers?

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John Summerscales

Four review papers that might provide clues at https://www.fose1.plymouth.ac.uk/sme/mats347/ReviewPapers.htm#enzyme

Ming Liu

Enzymatic retting cannot be successfully applied on hemp/flax stems without any pretreatment.

Pretreatment can enhance enzyme accessibility for non-cellulosic components.

A short-period dew-retting might be one option as pretreatment for following enzymatic treatment.