scholarly journals Enzymatic Hydrolysis and Ethanol Fermentation of By-Products from Potato Processing Plants

2009 ◽  
Vol 15 (6) ◽  
pp. 653-658 ◽  
Author(s):  
Sunao YAMADA ◽  
Noriyuki SHINOMIYA ◽  
Kiyoshi OHBA ◽  
Mitsuo SEKIKAWA ◽  
Yuji ODA
Keyword(s):  
Enzymatic Hydrolysis ◽  
Ethanol Fermentation ◽  
Potato Processing ◽  
Processing Plants ◽  
By Products

scholarly journals Highly-Efficient Release of Ferulic Acid from Agro-Industrial By-Products via Enzymatic Hydrolysis with Cellulose-Degrading Enzymes: Part I–The Superiority of Hydrolytic Enzymes Versus Conventional Hydrolysis

Foods ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 782
Author(s):  
Karina Juhnevica-Radenkova ◽  
Jorens Kviesis ◽  
Diego A. Moreno ◽  
Dalija Seglina ◽  
Fernando Vallejo ◽  
...  
Keyword(s):  
Enzymatic Hydrolysis ◽  
Ferulic Acid ◽  
Hydrolytic Enzymes ◽  
Structural Complexity ◽  
Triticum Aestivum L ◽  
Feed Supplement ◽  
Degrading Enzymes ◽  
Secale Cereale L ◽  
Pre Treatment ◽  
By Products

Historically Triticum aestívum L. and Secale cereále L. are widely used in the production of bakery products. From the total volume of grain cultivated, roughly 85% is used for the manufacturing of flour, while the remaining part is discarded or utilized rather inefficiently. The limited value attached to bran is associated with their structural complexity, i.e., the presence of cellulose, hemicellulose, and lignin, which makes this material suitable mostly as a feed supplement, while in food production its use presents a challenge. To valorize these materials to food and pharmaceutical applications, additional pre-treatment is required. In the present study, an effective, sustainable, and eco-friendly approach to ferulic acid (FA) production was demonstrated through the biorefining process accomplished by non-starch polysaccharides degrading enzymes. Up to 11.3 and 8.6 g kg−1 of FA was released from rye and wheat bran upon 24 h enzymatic hydrolysis with multi-enzyme complex Viscozyme® L, respectively.

scholarly journals Proteins and Bioactive Peptides in High Protein Content Foods

Foods ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1186
Author(s):  
Fidel Toldrá ◽  
Leticia Mora
Keyword(s):  
Enzymatic Hydrolysis ◽  
Protein Content ◽  
Human Body ◽  
Bioactive Peptides ◽  
High Protein ◽  
Microbial Fermentation ◽  
Gastrointestinal Digestion ◽  
High Protein Content ◽  
By Products

Foods and their industry by-products constitute very good sources of bioactive peptides, which can be naturally generated during processing but are also extensively produced through enzymatic hydrolysis, microbial fermentation, and even during gastrointestinal digestion in the human body [...]

scholarly journals Acid and Enzymatic Hydrolyses of Rice Bran for Bioethanol Production

ALCHEMY ◽  
2018 ◽  
Vol 6 (1) ◽  
pp. 24
Author(s):  
Dewi Yuliani ◽  
Khoirul Achmad Julianto ◽  
Akyunul Jannah
Keyword(s):  
Enzymatic Hydrolysis ◽  
Hydrochloric Acid ◽  
Acid Hydrolysis ◽  
Sulphuric Acid ◽  
Rice Bran ◽  
Dilute Hydrochloric Acid ◽  
Cellulolytic Enzyme ◽  
Bioethanol Production ◽  
By Products ◽  
Sugar Source

<p class="BodyAbstract">Rice bran is one among many agricultural by-products containing ~50-60 wt.% of carbohydrate. The carbohydrate is a prominent sugar source for bioethanol production. The objective of this research was to study bioethanol production from rice bran by acid and enzymatic treatment. The variations of acid used were dilute hydrochloric acid and sulphuric acid, while variations of enzyme used were amylolytic and cellulolytic enzyme. Ethanol production of acid-hydrolyzed rice bran was 24.95±1.61% (v/v) by hydrochloric acid and 29.57±2.04% (v/v) by sulphuric acid. Ethanol produced by enzymatic hydrolysis was quite low i.e. 6.7±0.04%, and 8.86±0.29% (v/v) for amylolytic and cellulolytic hydrolysate, respectively.</p><p class="BodyAbstract"> </p><p>Keywords: Bioethanol, rice bran, acid hydrolysis, enzymatic hydrolysis</p>

scholarly journals Ethanol Production from Waste of Cassava Processing

2018 ◽  
Vol 8 (11) ◽  
pp. 2158 ◽  
Author(s):  
Daiana Martinez ◽  
Armin Feiden ◽  
Reinaldo Bariccatti ◽  
Katya de Freitas Zara
Keyword(s):  
Enzymatic Hydrolysis ◽  
Ethanol Production ◽  
First Generation ◽  
Chemical Compositions ◽  
Energy Matrix ◽  
Average Yield ◽  
Ph Values ◽  
Cassava Bagasse ◽  
High Starch ◽  
By Products

Cassava processing produces by-products such as brown bark, between bark, disposal, bran, fiber and bagasse. Cassava bagasse is characterized as a source of starch that can be converted into sugars to obtain biofuels. The objective of this work was to produce ethanol from this cassava processing residue and to evaluate its contribution potential in the Brazilian energy matrix. Cassava processing residues were obtained from four different starch manufacturers in Brazil. Analysis of the chemical compositions of these samples provided the content of starch, sugar, crude grease, moisture, ash and also their pH values. For the ethanol process, the samples were submitted to enzymatic hydrolysis using the alpha-amylase and amyloglucosidases enzymes, followed by fermentation and distillation. The samples showed high starch indices, approximately 64% on average. The average yield of ethanol obtained was 30% after treatment of the sample like this. Considering the estimated volume of cassava bagasse in Brazil, it is possible to produce an average of 789 million cubic meters per bagasse, replacing about 24% of the first generation ethanol. Cassava bagasse can be considered an interesting biomass for the production of biofuels, contributing to the expansion of the energy matrix.

Pretreatment of sugarcane bagasse by OX‐B to enhancing the enzymatic hydrolysis for ethanol fermentation

2020 ◽  
Author(s):  
Luiza Helena da Siva Martins ◽  
Andrea Komesu ◽  
João Moreira Neto ◽  
Johnatt Allan Rocha Oliveira ◽  
Sarita Cândida Rabelo ◽  
...  
Keyword(s):  
Enzymatic Hydrolysis ◽  
Sugarcane Bagasse ◽  
Ethanol Fermentation

scholarly journals Influence of Initial Alkalinity of Lignocellulosic Waste on Their Enzymatic Degradation

2014 ◽  
Vol 40 (2) ◽  
pp. 103-113
Author(s):  
Marcin Wołczyński ◽  
Marta Janosz-Rajczyk
Keyword(s):  
Enzymatic Hydrolysis ◽  
Enzymatic Degradation ◽  
Suspended Solids ◽  
Lignocellulosic Waste ◽  
Initial Exposure ◽  
Total Sugars ◽  
Physical Chemical ◽  
Effect Of Treatment ◽  
Hydrolysis Of ◽  
By Products

Abstract The presented results of research on the effectiveness of enzymatic hydrolysis of lignocellulosic waste, depending on their initial depolymerisation in alkaline medium were considered in the context of the possibility of their further use in the fermentation media focused on the recovery of energy in the form of molecular hydrogen. The aim of this study was to determine the appropriate dose and concentration of a chemical reagent, whose efficiency would be high enough to cause decomposition of the complex, but without an excessive production of by-products which could adversely affect the progress and effectiveness of the enzymatic hydrolysis and fermentation. The effect of treatment on physical-chemical changes of homogenates’ properties such as pH, COD, the concentration of monosaccharide and total sugars and the concentration of total suspended solids and volatile suspended solids was determined. The enzymatic decomposition of lignocellulosic complex was repeatedly more efficient if the sample homogenates were subjected to an initial exposure to NaOH. The degree of conversion of complex sugars into simple sugars during enzymatic hydrolysis of homogenates pre-alkalized to pH 11.5 and 12.0 was 83.3 and 84.2% respectively, which should be sufficient for efficient hydrogen fermentation process.

By-products from cereal, sugar beet and potato processing

1980 ◽  
Vol 3 ◽  
pp. 61-69 ◽  
Author(s):  
W. P. Barber ◽  
C. R. Lonsdale
Keyword(s):  
Nutrient Content ◽  
Metabolizable Energy ◽  
Potato Processing ◽  
Livestock Farming ◽  
Nutrient Imbalance ◽  
The United Kingdom ◽  
Nutrient Density ◽  
Relative Value ◽  
Soya Bean Meal ◽  
By Products

From just five industries in the United Kingdom — brewing, distilling, milling, sugar extraction and potato processing — at least 2.7 × 106 mega joules (MJ) of metabolizable energy (ME) and 4 × 105 tonnes of crude protein (CP) are available annually to livestock farming as by-products. This is equivalent to 1.6 × 106 tonnes of barley and 4.7 × 105 tonnes of soya bean meal, although in some cases nutrient density may differ somewhat from that found in barley or soya.A large proportion of the by-products available is already used in animal feeds, either djrectly by the farmer or through inclusion in compound feeds which are then used as components of balanced rations.The materials available are potentially alternative feedstuffs to conventional forages or concentrates. As such they will only form part of a balanced ration and it is in this context that their relative value and usefulness can be judged. In many investigations there has been a tendency to consider particular by-products in isolation and as a consequence any nutrient imbalance has been highlighted to the detriment of the material as an alternative feed. Very few straight feedstuffs contain ratios of nutrients balanced for particular levels of animal production and invariably rations for livestock consist of blends of different materials. Whilst extremes of nutrient imbalance may be identified in individual by-products they are, none the less, wholly suited to blending with other by-products or feeds of contrasting nutrient content in order to produce a completely balanced ration.

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