Digestate from biowaste was assessed as a potential source of bioproducts of commercial and industrial interest through solid-state fermentation. The targeted bioproducts were hydrolytic enzymes (cellulases and proteases from autochthonous microbiome), biosurfactants (sophorolipids produced from Starmella bombicola) and biopesticides (produced from Bacillus thuringiensis). Low cellulase production was observed within the range of 0.5–1.5 FPU g⁻¹ DM while protease production showed two discrete peaks of 66 ± 8 and 65 ± 3 U g⁻¹ DM at 3.5 and 48 h, respectively. Low sophorolipids production was also obtained, with a maximum yield of 0.02 g g⁻¹ DM using hygienised digestate supplemented with external sugar and fat sources. Biopesticides produced by B. thuringiensis were successfully at 72 h of operation, reaching a maximum spore production of 8.15 ± 0.04 (10⁷) CFU g⁻¹ DM and 2.85 ± 0.22 (10⁷) CFU g⁻¹ DM using sterile and hygienised digestate, respectively. These biopesticides could contribute to the substitution of chemically produced pesticides, moving towards a sustainable digestate management in a circular economy scheme.

通过固态发酵，生物废物中的消化物被评估为具有商业和工业意义的生物产品的潜在来源。靶向的生物产品是水解酶（来自土生微生物的纤维素酶和蛋白酶），生物表面活性剂（从Starmella bombicola生产的槐糖脂）和生物农药（从苏云金芽胞杆菌生产）。在0.5–1.5 FPU g ^-1 DM的范围内观察到低纤维素酶的产生，而蛋白酶的产生分别在3.5和48 h出现两个离散的峰，分别为66±8和65±3 U g ^-1 DM。槐糖脂的产量也很低，最大产量为0.02 g g ^-1DM使用卫生的消化物，辅以外部糖和脂肪来源。苏云金芽孢杆菌产生的生物农药在运行72小时后成功，使用无菌和卫生的消化液，其最大孢子产量达到8.15±0.04（10 ⁷）CFU g ^-1 DM和2.85±0.22（10 ⁷）CFU g ^-1 DM。 ， 分别。这些生物杀虫剂可能有助于替代化学生产的农药，从而在循环经济计划中朝着可持续的消化管理迈进。