Changes in enzyme activities during vermicomposting and normal composting of vegetable market waste

Lakshmi, C. Subha; Rao, P. Chandrasekhar; Madhavi, M.; Padmaja, G.; Sireesha, A.

doi:10.5958/0976-0547.2014.00025.1

Cited by 11 publications

(6 citation statements)

References 7 publications

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“…Figure 3 shows the behavior of alkaline phosphatase activity during the composting process. Due to the pH values presented in the alkalinity range for all treatments (Figure 4), alkaline phosphatase activity was predominant, a fact also observed by Lakshmi et al (2014). The highest activity of alkaline phosphatase ( Figure 3) was observed in the T4 treatment, the same treatment presented the highest initial amount of total phosphorus (0.78 kg P) among the treatments.…”

Section: Alkaline Phosphatase Activitymentioning

confidence: 59%

“…Important enzymes which are involved in the composting process are: cellulase which depolymerize cellulose; β -glucosidases which are involved in the carbon cycle through the hydrolysis of glucosides; proteases and ureases which take part in nitrogen mineralization; and phosphatases and arylsulphatases which release phosphate and sulphates groups from organic compounds (Vargas-García et al, 2010). As a consequence, specific enzymatic activities can provide a characterization of the composting process, both in terms of the organic waste transformation rate as of the stabilized final products (Nikaeen et al, 2015), with emphasis on the availability of plant nutrients (Lakshmi et al, 2014). Thus, the monitoring of the intensity of the enzymatic activity can contribute to decision making along with other process control parameters, especially with regard to the availability of nutrients in the inorganic form.…”

Section: Introductionmentioning

confidence: 99%

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Microbiological Activity During the Composting of Wastes From Broiler Productive Chain

Bernardi

Costa

et al. 2018

Eng. Agríc.

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The quality of the carbon used as bulking agent in the composting process directly affects the dynamics of the waste degradation, which is governed by an active and diversified microbiota. The monitoring of the basal respiration and enzymatic activities during the composting of broiler agro-industrial wastes with different carbon sources as bulking agents was the aim of this study. The microbiological activities were more intense in the thermophilic phase of the process. The dynamics of the enzymatic activities were affected by the different carbon sources used as bulking agent in the composition of the windrows. When the milled sugarcane bagasse was used as carbon source, the windrow presented the highest amount of P in its constitution and presented, in the evaluation averages, a greater intensity of the alkaline phosphatase enzyme (842 μg g-1 h-1 p-nitrophenol compost); the highest intensities of β-glucosidase and cellulase enzymes were observed when fresh and ground napier grass was used as the main source of carbon (6.1 μmol g-1 h-1 p-nitrophenol compost and 35.2 μmol g-1 16h-1 glucose compost, respectively); the highest intensity of the urease enzyme was also observed in the windrow where napier grass was used as the main carbon source and bulking agent (205,890 μmol g-1 2 h-1 N-NH 4+ compost). It can be concluded that napier grass when used as the main source of carbon and bulking agent in the composting of the wastes from broiler chicken production chain promotes greater intensity of most of the enzymatic activities of interest. The enzymatic activity of urease presented the highest values due to the high nitrogen content of the composted wastes.

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Section: Alkaline Phosphatase Activitymentioning

confidence: 59%

Section: Introductionmentioning

confidence: 99%

Microbiological Activity During the Composting of Wastes From Broiler Productive Chain

Bernardi

Costa

et al. 2018

Eng. Agríc.

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“…When the composting ended, the Treatment showed markedly higher levels of DP and PHA, about 0.46 and 27.50, compared with the CK (0.39 and 22.53) ( P < 0.05). The increase in DP reflects the formation of complex molecules (HA) from more simple molecules (FA), DP is also representative of the polymerisation degree of organic matter . The increase of PHA reflects the large increase of the HA fraction .…”

Section: Resultsmentioning

confidence: 99%

“…The increase in DP reflects the formation of complex molecules (HA) from more simple molecules (FA), DP is also representative of the polymerisation degree of organic matter. 27 The increase of PHA reflects the large increase of the HA fraction. 25 These results indicated that inoculation with CMs could promote wileyonlinelibrary.com/jctb the evolution of FA to HA and increase the polymerisation degree of organic matter.…”

Section: Changes In Chemical and Humification Parametersmentioning

confidence: 99%

Effect of inoculation with multiple composite microorganisms on characteristics of humic fractions and bacterial community structure during biogas residue and livestock manure co‐composting

Song

Wei

et al. 2014

J of Chemical Tech & Biotech

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BACKGROUND It is necessary to inoculate microbes in the composting of special materials. Biogas residue (BR) is rich in refractory lignocellulose. To improve humification processes of BR composting, composite microorganisms (CMs), with multiple functions, were added to the mixture of BR and animal manure. RESULTS The results indicated that four humification indices (DP, PHA, HR, HI) were all markedly higher in the inoculated compost (0.46, 27.5, 43.34, 11.92) than in the uninoculated compost (0.39, 22.53, 28.56, 6.49) (P < 0.05). The inoculation increased the degree of polycondensation and aromatization, and molecular size, as well as the humification degree of BR compost as determined by fluorescence spectroscopy and fluorescence regional integration analysis of humic acids, fulvic acids and hydrophilic fraction, three chemically isolated fractions. Additionally, the inoculation increased the quantity and diversity of indigenous microorganisms and accelerated their proliferation by adjusting environmental conditions to optimize their growth. CONCLUSION The CMs inoculant is suitable for BR composting and inoculating based on the composition of the composting substrate could enhance composting efficiency and improve compost quality. © 2014 Society of Chemical Industry

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“…Vermicomposting converts the original waste materials to give a final product free of pollutants and of greater economic value (Lakshmi et al, 2014;Munnoli, 2015). Studies on the microbes associated with earthworms show that these microbes are directly or indirectly involved in the decomposition of organic matter and soil stabilization.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Microbiological Quality of Vermicompost Prepared from Different Types of Organic Wastes using Eisenia fetida

Kapila¹,

Verma²,

Sen³

2021

ASD

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Background: Vermicomposting is the agricultural technique of conversion of organic wastes to a fertile product, which can result in better crop growth and production. However, even though earthworms are the main organisms participating in the process, the microbes associated with it also have an important role to play. These microbes degrade the waste products biochemically and are responsible of the conversion processes. Few studies are carried out on microbial diversity and related enzymes activities in the vermicompost prepared from different organic waste materials. Methods: In this paper, we isolated both bacteria and fungi from seven different types of vermicompost, using different selective media. We also studied the activity of hydrolytic enzymes that are associated with the isolated microbes.Result: It was observed that bacteria like Bacillus sp., Pseudomonas sp., Klebsiella sp., Staphylococcus aureus, Streptococcus, Micrococcus, Actinomycetes, Pigment producing Actinomycetes, Streptomyces, Azotobactor and fungi like Penicillium purpurogenum, Aspergillus sp., Alternaria alternata, Fusarium solani, Rhizopus sp., Mucor hiemalis, Myrothecium verrucaria etc. were present in our vermicompost preparations. The presence of nitrogen fixing bacteria, phosphate solubilizing microorganisms and PGPR indicated the good fertilizer value of the vermicompost samples. It was also observed that the diversity of microbes present supported significant levels of CMCase Exoglucanase, Xylanase, β-Glucosidase, Phosphatase and Urease activities.

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Changes in enzyme activities during vermicomposting and normal composting of vegetable market waste

Cited by 11 publications

References 7 publications

Microbiological Activity During the Composting of Wastes From Broiler Productive Chain

Microbiological Activity During the Composting of Wastes From Broiler Productive Chain

Effect of inoculation with multiple composite microorganisms on characteristics of humic fractions and bacterial community structure during biogas residue and livestock manure co‐composting

Evaluation of Microbiological Quality of Vermicompost Prepared from Different Types of Organic Wastes using Eisenia fetida

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