Solid state fermentation (SSF): diversity of applications to valorize waste and biomass

Lizardi-Jiménez, Manuel Alejandro; Hernández-Martínez, R.

doi:10.1007/s13205-017-0692-y

Cited by 140 publications

(70 citation statements)

References 88 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Solid-state fermentation (SSF) is described as the biotransformation that takes place in a solid matrix in the absence or near absence of free water [6]. SSF has received extra attention over the last few years as researchers explored the production of added-value compounds such as enzymes, antibiotics, bioactive compounds, biological control molecules, etc., by using biomass or by-products from other processes [7,8]. Several studies have reported the optimization of cellulases and hemicellulases' production due to their role in biofuel production and associated costs [9,10].…”

Section: Introductionmentioning

confidence: 99%

Microbial Strategies for Cellulase and Xylanase Production through Solid-State Fermentation of Digestate from Biowaste

et al. 2018

View full text Add to dashboard Cite

Solid-state fermentation (SSF) is a promising technology for producing bioproducts from organic wastes. The objective of this study is to assess the feasibility of using digestate as substrate to produce hydrolytic enzymes, mainly cellulase and xylanase, by exploring three different inoculation strategies: (i) SSF with autochthonous microbiota; (ii) non-sterile SSF inoculated with Trichoderma reesei and (iii) sequential batch operation to select a specialized inoculum, testing two different residence times. Native microbial population did not show a significant cellulase production, suggesting the need for a specialized inoculum. The inoculation of Trichoderma reesei did not improve the enzymatic activity. On the other hand, inconsistent operation was achieved during sequential batch reactor in terms of specific oxygen uptake rate, temperature and enzymatic activity profile. Low cellulase and xylanase activities were attained and the main hypotheses are non-appropriate biomass selection and some degree of hydrolysis by non-targeted proteases produced during fermentation.

show abstract

Section: Introductionmentioning

confidence: 99%

Microbial Strategies for Cellulase and Xylanase Production through Solid-State Fermentation of Digestate from Biowaste

et al. 2018

View full text Add to dashboard Cite

show abstract

“…In our study, the selected potential fungal strains reduced the lignin and holocellulose contents of the substrates with respect to increase in incubation time. Li et al (2008) have reported that an efficient ligninolytic fungus F. concolor was significantly degraded and removed 13.07% of lignin and 7.62% of holocellulose contents of wheat straw.…”

Section: Discussionmentioning

confidence: 99%

Biodegradation potential of indigenous litter dwelling ligninolytic fungi on agricultural wastes

Geethanjali¹,

Gowtham

Jayashankar

2020

Bull Natl Res Cent

View full text Add to dashboard Cite

Background The present study was focused to study the efficiency of two indigenous litter dwelling ligninolytic fungi (such as Mucor circinelloides GL1 and Fusarium verticillioides GL5) in degrading the agricultural wastes (areca husk, coffee husk and paddy straw) through solid-state fermentation. Results After fermentation process, the lignocellulosic residues left over were evaluated for their physico-chemical studies and degradation pattern of cell wall constituents along with the activity of enzymes. In each substrate, the initial pH was found to change from near-neutral to acidic pH after fungal decomposition. Significantly increased loss of total organic matter and organic carbon content was observed in each substrate decomposed by the fungal strains selected. The total nitrogen, crude protein, total phosphorus and total potassium contents of the fungal decomposed substrates were significantly increased with the progress of time. The study indicated that the degradation patterns of lignin and holocellulose were more effective from 20 to 120 days after fungal inoculation with respect to their loss between the different harvesting intervals. During decomposition process, both the strains produced the ligninolytic enzymes [laccase, manganese peroxidase (MnP) and lignin peroxidase (LiP)] and carboxymethyl cellulase (CMCase) on each substrate with their remarkably varied activities with respect to different harvesting times. Conclusions In concern with the present environmental problems, the present study suggested that these potential ligninolytic fungi can be utilized successfully for the management of agricultural wastes and reuse of their residues in the forest soil conservation system to eliminate the harmful effects of the crop residue burning.

show abstract

“…Additionally, valorization of agro-industrial residues may offer distinctive economic, environmental, and strategic advantages [28]. Although submerged fermentation (SmF) has widely been used for microbial enzyme production, the solid state fermentation (SSF) has gained substantive interest due to its advantages [20], such as simplicity of media, machinery, control system, downstream processing or process scale-up, lower capital/operational cost, and energy and space requirement, increased enzyme yield, among others [4,12,14,31]. Process optimization has always been instrumental for industrial production.…”

Section: Introductionmentioning

confidence: 99%

Bioprocess development for production of a process-apt xylanase with multifaceted application potential for a range of industrial processes

Sharma

Nargotra

et al. 2020

SN Appl. Sci.

View full text Add to dashboard Cite

Discovery of new/novel enzymes with process-apt features has been a continuous practice. A wide range pH-stable and thermostable xylanase was reported hitherto from a newly isolated fungal strain Aspergillus terreus S9, from mushroom compost. This is the first ever report where-in a pH-stable and thermostable xylanase is being reported from a strain of A. terreus. Solid state fermentation was executed on agro-industrial residues for xylanase production. Maximum xylanase production was supported by wheat bran (40 U/ml), however, substantial xylanase yield was observed on other residues like corn cob powder (38.4 U/ml), cotton cake (38 U/ml), malt (37.6 U/ml) and almond hulls (35.2 U/ml). Almond hulls are being reported for the first time as the substrate for xylanase production. Plackett-Burman design was used to earmark the most effective process variables (wheat bran, medium pH, and incubation time), and the same were optimized by design of experiments (DoE) based on response surface methodology to achieve a yield enhancement of 1.82-fold. A. terreus S9 xylanase exhibited an excellent and brisk clarification of mosambi and orange juices. DoE based optimization of process parameters (enzyme dose, treatment time and incubation temperature) resulted in 1.23-fold and 1.28-fold enhanced orange and mosambi juice clarification, respectively. Furthermore, admirable dough raising capacity and pulp brightening ability of A. terreus S9 xylanase shows its promising potential for bread making, and eco-friendly biobleaching processes, respectively. The xylanase must be in-depth investigated to decipher the molecular mechanisms of diverse applications.

show abstract

Solid state fermentation (SSF): diversity of applications to valorize waste and biomass

Cited by 140 publications

References 88 publications

Microbial Strategies for Cellulase and Xylanase Production through Solid-State Fermentation of Digestate from Biowaste

Microbial Strategies for Cellulase and Xylanase Production through Solid-State Fermentation of Digestate from Biowaste

Biodegradation potential of indigenous litter dwelling ligninolytic fungi on agricultural wastes

Bioprocess development for production of a process-apt xylanase with multifaceted application potential for a range of industrial processes

Contact Info

Product

Resources

About