Processing cereal straws by steam explosion in a pilot plant to enhance digestibility in ruminants

Viola, Egidio; Zimbardi, Francesco; Cardinale, M.; Cardinale, G.; Braccio, Giacobbe; Gambacorta, Emilio

doi:10.1016/j.biortech.2007.02.001

Cited by 62 publications

(37 citation statements)

References 20 publications

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“…Beside the desired improved enzyme accessibility and subsequently the increased sugar yield, this process also causes a significant mass loss. This was observed in numerous studies on various substrates [16][17][18][19]. Another effect is the liberation of toxic degradation products during pretreatment and their accumulation in the hydrolysates.…”

mentioning

confidence: 82%

Corncobs as Substrate for Oleaginous Yeast–Pretreatment via Steam Explosion and Hydrolysis

Kahr¹,

Pointner²,

Krennhuber³

et al. 2015

JESE-A

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Corn cobs are a promising lignocellulosic substrate for the production of biofuels like bioethanol via conventional yeast or biodiesel via oleaginous yeast. Pretreatment of the substrate is essential for further hydrolysis and fermentation steps. This study focused on the steam explosion method as pretreatment. Therefore, different steam explosion severities were evaluated. (untreated) to a maximum of 214.9 g·kg -1 dry matter (190 °C/30 min). Furthermore, the mass recovery was calculated. At harsher pretreatment conditions, a significant mass loss was observed, estimated by the ash content in the recovered dry matter. The lowest recovery rate was observed for SF = 4.13 (190 °C/30 min) with 68.39%. The produced inhibitors were evaluated.

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mentioning

confidence: 82%

Corncobs as Substrate for Oleaginous Yeast–Pretreatment via Steam Explosion and Hydrolysis

Kahr¹,

Pointner²,

Krennhuber³

et al. 2015

JESE-A

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“…Cellulose have protected and sheathed by lignin and hemicellulose, and also lignin have covalently bonded to carbohydrates [41]. Cellulose, hemicellulose and lignin content of wheat straw have including [33][34][35][36][37][38][39][40][20][21][22][23][24][25], and 15-20 (%w/w), respectively [60]. Due to this structural complexity of the lignocellulosic matrix, ethanol production from wheat straw requires pretreatment, which is very important for its degradation.…”

Section: Wheat Straw Production and Potential Feedstock For 2nd Genermentioning

confidence: 99%

“…Temperatures from 160-230 C for several seconds to a few minutes are normally used in the SE of wheat straw. Steam explosion has effective and extensively used pretreatment method [22,30]. After steam explosion pretreatment, the tight physical structure of the straw was disrupted.…”

Section: Physico-chemicalmentioning

confidence: 99%

Pretreatments to Enhance the Digestibility of Wheat Straw

Zahoor

2014

IJRSE

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Abstract:Wheat straw is a sufficient agricultural by-product with a low market price. The biofuel produced from lignocellulosic material exhibits energetic, economic and environmental benefits in contrast to bio-ethanol from starch or sugar. Until now, physical and chemical difficulty caused by the close connection of the main components of lignocellulosic biomass, discourage the hydrolysis of cellulose and hemicellulose to fermentable sugars. The main purpose of pretreatment is to enhance the enzyme accessibility improving digestibility of cellulose. Every pretreatment has a particular effect on the fraction of cellulose, hemicellulose and lignin, thus different pretreatment methods and conditions should be selected for the development of subsequent hydrolysis and fermentation steps. This paper reviews the most importance technologies for ethanol production from lignocellulose and its represent several vital qualities that should be marked for low-price and promote pretreatment processes.

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“…In past years, many studies have been carried out to improve low quality residues as animal feed with various methods such as physics (Cristiyanto and Subrata, 2005;Viola et al, 2008;Samadi and Yu 2011;Samadi et al, 2013), chemistry (Bata, 2008) and biology (Pandey et al, 2000;Tang et al, 2008;Wajizah et al, 2015). Feed technology fermentation using microbial appears to be a practical and promising alternative to improve nutritional value of agro residues by processing these materials into animal feed and thus resulting in a value-added product.…”

Section: Introductionmentioning

confidence: 99%

In Vitro Study of Fermented Complete Feed by Using Sago Residues as Main Source Diet

Samadi

Wajizah

Usman

2015

anprod

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Abstract. Recently, fermentation of low quality feed such as agro industry by products has been widely applied to produce enriched animal feed and improve animal productivity. The purpose of this study was to evaluate in vitro digestibility of fermented complete feed using agro-residues from sago starch processing industries as main source diet. Feed was formulated on the basis of 40% sago residue and mixed with other ingredients (rice brand, coconut meal, bread by product, soybean meal and soybean hulls) to fulfill the requirement of sheep with 16.10% of CP, 2.80 Mcal ME/kg and TDN 60.88% based on calculation. Mineral and Urea were added in the complete feed to reach mineral and CP requirements of sheep. Complete feed formulation was fermented by using 3 commercial fermentation products (Saus Burger Pakan® (SBP), Probion® and EM4®) for 21 days. Total and types of microbes from commercial fermentation products utilized in this study were not determined. Parameters measured in this study were pH, NH3, IVDMD (in vitro dry matter digestibility), IVOMD (in vitro organic matter digestibility) and VFA total. The model used for the statistical analysis was completely randomized design (CRD) with 4 treatments (control and 3 different commercial fermentation products) and 4 replications. Result indicated that administration of different commercial fermentation products into fermented complete feed based on sago residues significantly influenced (P<0.05) on pH, NH3, VFA total, IVDMD and IVOMD. Generally, commercial fermentation products mainly SBP produced better feed quality by improving the values of pH, NH3, VFA total, IVDMD and IVOMD. However, types and total microorganisms needed to be determined prior to experiment. Key Words: fermentation, sago waste, in vitro, complete feedAbstrak. Akhir-akhir ini penggunaan bahan pakan berkualitas rendah yang berasal dari limbah industri pertanian telah diterapkan secara luas yang bertujuan untuk meningkatkan kualitas pakan dan produktivitas ternak. Tujuan dari penelitian ini adalah untuk mengevaluasi complete feed fermentasi berbahan dasar ampas sagu secara in vitro. Pakan diformulasikan dengan menggunakan 40% ampas sagu dan dicampur dengan bahan pakan lainnya (dedak, bungkil kelapa, sisa roti, bungkil kedelai dan kulit ari kedela) untuk memenuhi kebutuhan nutrisi domba (16,10% of PK, 2,80 Mkal ME/kg and TDN 60,88%). Mineral adan urea ditambah pada complete feed untuk memenuhi kebutuhan mineral dan protein dari ternak domba. Complete feed yang telah diformulasi difermentasi dengan menggunakan 3 produk fermentasi komersil (Saus Burger Pakan® (SBP), Probion® and EM4®) selama 21 hari. Total dan jenis mikro organisme dalam produk fermentasi komersil tidak dihitung. Penelitian ini menggunakan rancangan acak lengkap yang terdiri dari 4 perlakuan dan 3 ulangan. Parameter yang dihitung dalam penelitian ini adalah pH, NH3, total VFA dan kecernaan bahan kering dan kecernaan bahan organik. Hasil penelitian menunjukan bahwa fermentasi complete feed dengan menggunakan produk fermentasi komer...

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Processing cereal straws by steam explosion in a pilot plant to enhance digestibility in ruminants

Cited by 62 publications

References 20 publications

Corncobs as Substrate for Oleaginous Yeast–Pretreatment via Steam Explosion and Hydrolysis

Corncobs as Substrate for Oleaginous Yeast–Pretreatment via Steam Explosion and Hydrolysis

Pretreatments to Enhance the Digestibility of Wheat Straw

In Vitro Study of Fermented Complete Feed by Using Sago Residues as Main Source Diet

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