Abstract:
(e plant extracts of T. brownii and Acanthaceae spp. have been used as biocatalysts by several communities in Kenya to hasten
anaerobic digestion. (is study aimed at assessing the viability of these two extracts in hastening the availability of plant nutrients
from bioslurry at ambient conditions. A controlled research design was followed using uncooked kitchen waste as the substrate for
28 retention days. Changes in bioslurry physicochemical properties and available plant nutrients were monitored every 7 days
using wet chemistry and spectroscopic methods. (e findings indicated that the two extracts significantly impacted the levels of
available plant nutrients in the bioslurry compared to the control samples. T. brownii additives significantly increased the levels of
lime content, total Kjeldahl nitrogen, total phosphorus, phosphoric acid, sulfur, and soluble silicic acid. On the contrary,
Acanthaceae spp. additives significantly increased the levels of calcium, potassium, nitrates, total ammoniacal nitrogen, sulfates,
and phosphates in the bioslurry samples. (e use of these plant extracts thus reduces the time taken while increasing the
concentration of available plant nutrients from bioslurry.
