1. bookVolume 63 (2019): Issue 2 (June 2019)
Journal Details
License
Format
Journal
eISSN
2453-7837
First Published
30 Mar 2016
Publication timeframe
4 times per year
Languages
English
access type Open Access

Proteolytic Activity of Edible Spruce Morchella esculenta

Published Online: 09 Jul 2019
Volume & Issue: Volume 63 (2019) - Issue 2 (June 2019)
Page range: 60 - 64
Received: 11 Mar 2019
Accepted: 14 Jun 2019
Journal Details
License
Format
Journal
eISSN
2453-7837
First Published
30 Mar 2016
Publication timeframe
4 times per year
Languages
English
Abstract

This study focused on the determination of non-specific proteolytic activity of edible spruce Morchella esculenta in water extract, phosphate-buffered saline (PBS) solution (pH = 7.5) extract and a suspension prepared from 200 mg DW (dry weight) of edible spruce in PBS solution (pH 7.5). A clear casein solution was used as a substrate. The absorbances were measured in quartz cuvettes at the wavelength of 280 nm against a blank with zero concentration of trypsin. Non-specific proteolytic activity was expressed as trypsin equivalents per kilogram of mushroom dry weight (mg.kg−1 DW). All of the extracts demonstrated non-specific enzymatic activity. The highest activity was observed in the PBS suspension and the lowest enzymatic activity was measured in the water extract of the Morchella esculenta fungi. The non-specific proteolytic activity decreased in the following order: PBS suspension extract (pH 7.5; 22.9 mg.kg−1 DW), followed by PBS extract (pH 7.5; 13.6 mg.kg−1 DW) and finally the water extract (10.94 mg.kg−1 DW).

Keywords

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