Inhibitory Effects of Phenolic Monomers on Methanogenesis in Anaerobic Digestion

Kayembe, K

doi:10.9734/bmrj/2013/2291

Cited by 44 publications

(38 citation statements)

References 7 publications

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“…In contrary to the report that phenolic compounds reduce the methanogenesis, in the present study, the addition of DTP did not change methane production in both of silage groups. This could be attributed to the metabolization of phenolic compund to end-products during ensilage, and inefficacy of these end-products on inhibiting of the methanogenesis [25] . In genarally, the addition of DTP suppressed the lactic acid levels of silages and contrary to expectation, LA levels of alfalfa silages were higher than that of the grass silage (P<0.001).…”

Section: Discussionmentioning

confidence: 99%

“…On the other hand, this reduction in LA level could be attributed to the pH range which might be contributed to acetobacter activity. LA is transformed to acetic acid by acetobacters activity at certain pH values (around pH: 4.0-4.5) causing an increasing of silage pH [25] . LA levels of a quality silages are reported as 50-70 g kg -1 of silage DM [23] .…”

Section: Discussionmentioning

confidence: 99%

“…The source of LA in silage is either cell wall components or water soluble carbohyrdrates of the plant material. AA level of silages is also important as much as LA level in this protection [25] . Furthermore, the source of AA is LA produced in silage that is transforming to AA by asetobacter in certain pH of silage.…”

Section: Discussionmentioning

confidence: 99%

“…Acetic acid bacteria are obligate aerobic and acid-tolerant bacteria. When the silage pH is around 4.0-4.5, LA are transformed to AA by acetic acid bacteria for maintaining their bacterial activities [25] . Similarly, it was determined that propionic acid levels were also increased in the silage samples with added DTP (P<0.001) ( Table 3 and Table 5).…”

Section: Discussionmentioning

confidence: 99%

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Kuru Kekik (Tymbra Spicata L. spicata) Posasının Çayır ve Yonca Silajının Fermantasyon Kalitesi ve İn Vitro Organik Madde Sindirilebilirliğine Etkisi

Aksu¹,

Denek²,

Aydin³

et al. 2017

Kafkas Univ Vet Fak Derg

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Citation of This ArticleAksu T, Denek N, Aydın SS, Dogan Bas B, Savrunlu M, Ozkaya S: Effect of dried thyme pulp (Tymbra Spicata L. spicata) on fermantation quality and in vitro organic matter digestibility of meadow grass and alfalfa silages. Kafkas Univ Vet Fak Derg, 23 (2): 211-217, 2017. DOI: 10.9775/kvfd.2016 AbstractThe aim of the study was to evaluate the possible effect of dried Thyme (Thymbra spicata L.) pulp (DTP) on first-cut meadow grass (Poa trivialis L.) and alfalfa (Medicago sativa L.) silage fermantation parameters and in vitro organic matter digestility. Experimental silage consisted of four replicates for each silage group (Grass, (G) and Alfalfa (L), respectively). Each silages groups were supplemented with DTP at 0, 0.5, 1.0, 3.0, and 5.0% level, respectively. The silos were stored for 60 d at room temperature (about 22°C). Results showed that silages added with DTP had higher amounts of NDF, acetic acid and propionic acid whlist lower amounts of lactic acid and NH3N-TN compared to those of control (P<0.001). DTP significantly reduced microbial load of silage opened at 60 days without changing lactobacilli (P<0.001). It was concluded that the reducing in the load of undesirable microorganisms (Enterobacter, yeast and mould) without causing a decline in the number of lactobacilli could be provided significantly advantages in terms of improving the aerobic stability of the silages. Keywords: Thyme (Tymbra Spicata L. spicata ) pulp, Phenolic compunds, Silage quality, Organic matter digestibility, Meadow grass, Alfalfa Kuru Kekik (Tymbra Spicata L. spicata) Posasının Çayır ve Yonca Silajının Fermantasyon Kalitesi ve İn Vitro Organik Madde Sindirilebilirliğine Etkisi ÖzetBu çalışmanın amacı, birinci biçim çayır (Poa trivialis L.) ve yonca (Medicago sativa L.) silajlarına farklı oranlarda ilave edilen kuru kekik (Thymbra spicata L.) posasının (KKP) silaj fermantasyon kalitesi ve in vitro organik madde sindirilebilirliği üzerine etkilerini belirlemekti. Silaj grupları her biri dört tekerrür olacak şekilde hazırlandı. Her iki silaj grubuna sırasıyla %0, 0.5, 1.0, 3.0, ve 5.0 düzeyinde kuru kekik posası ilave edildi. Birer kg cam kavanoz silajları 60 gün oda ısında bekletildi. Araştırma sonuçları, KKP ilaveli silajlarda NDF, asetik asit ve propiyonik asit miktarları artarken, laktik asit ve toplam azot içerisindeki amonyak azotu miktarının azaldığını gösterdi (P<0.001). Deneme silajlarında organik maddenin sindirilme derecesinde bir değişiklik tespit edilmedi. Altmışıncı günde açılan silajlarda, KKP ilavesinin laktobasil sayısında bir değişiklik oluşturmadan istenmeyen mikroorganizma yükünü önemli derecede düşürdüğü belirlendi (P<0.001). KKP'nın silajların laktobasil sayısında herhangi bir düşüşe neden olmadan istenmeyen mikroorganizmalar (Enterobakter, maya ve küf ) üzerindeki bu önleyici etkisinin silajların aerobik stabilizasyonunu iyileştirmesi bakımından önemli avantaj sağlayabileceği sonucuna varıldı.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Kuru Kekik (Tymbra Spicata L. spicata) Posasının Çayır ve Yonca Silajının Fermantasyon Kalitesi ve İn Vitro Organik Madde Sindirilebilirliğine Etkisi

Aksu¹,

Denek²,

Aydin³

et al. 2017

Kafkas Univ Vet Fak Derg

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“…The other reason for less biogas production during co-digestion could be due to the cassava to winery waste ratio. Winery waste has been found to have inhibiting factors for biogas production such as the presence of phenolics which inhibit biogas production [17]. Lafka et al [18] studied winery waste phenolics using HPLC and found it to have major phenolics like gallic acid, catechin and epicatechin.…”

Section: Fig 4: Bmp Test Graph That Shows the Average Methane Yieldmentioning

confidence: 99%

Biomethane Potential from Co-digestion of Cassava and Winery Waste in South Africa

Mkruqulwa¹,

Okudoh²,

Oyekola³

2017

Nov. 27-28, 2017 South Africa ASETWM-17, RCABES-17 &Amp; EBHSSS-17

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Abstract-Co-digestion of cassava and winery waste was investigated for the production of biogas. Cassava biomass is a good substrate due to its high carbohydrate yield per hectare (4.742kg/carb) than most plants. Winery waste is a growing problem in South Africa due to high amounts currently being dumped at landfills. Due to the chemical properties of the two substrates it is envisaged that their co-digestion will produce more biogas than use of a single substrate. Biomethane potential (BMP) tests were carried out in a batch, mesophilic (37˚C±0.5) reactor using cassava and winery waste singly and in combination at a ratio of 1:1 and run for 30 days. The results showed that cumulative methane yield for cassava, winery waste and in combination were 42, 21 and 38 mLCH 4 respectively. It was concluded that biogas production from anaerobic digestion was dependent on many factors such as pH, substrate properties and the ratio of different feedstocks used during co-digestion.

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Biomass Processing via Thermochemical–Biological Hybrid Processes

Torri

Rombolà

Kiwan

et al. 2021

Biomass Valorization

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Inhibitory Effects of Phenolic Monomers on Methanogenesis in Anaerobic Digestion

Cited by 44 publications

References 7 publications

Kuru Kekik (Tymbra Spicata L. spicata) Posasının Çayır ve Yonca Silajının Fermantasyon Kalitesi ve İn Vitro Organik Madde Sindirilebilirliğine Etkisi

Kuru Kekik (Tymbra Spicata L. spicata) Posasının Çayır ve Yonca Silajının Fermantasyon Kalitesi ve İn Vitro Organik Madde Sindirilebilirliğine Etkisi

Biomethane Potential from Co-digestion of Cassava and Winery Waste in South Africa

Biomass Processing via Thermochemical–Biological Hybrid Processes

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