Sugar beet pulp, a byproduct of sugar processing, can be used as feedstock in second-generation ethanol production. The objective this study was to investigate the effects pretreatment, dosage cellulase and hemicellulase enzyme preparations used, aeration on release fermentable sugars yield during simultaneous saccharification fermentation (SSF) pulp-based worts. Pressure-thermal pretreatment applied pulp suspended 2% w/w sulphuric acid solution at ratio providing 12% dry matter. Enzymatic...

This paper evaluated the effectiveness of nitric acid pretreatment on hydrolysis and subsequent fermentation Jerusalem artichoke stalks (JAS). is considered a potential candidate for producing bioethanol due to its low soil climate requirements, high biomass yield. However, have complexed lignocellulosic structure, so appropriate necessary prior enzymatic hydrolysis, enhance amount sugar that can be obtained. Nitric promising catalyst efficiency with which it removes hemicelluloses. was...

This study investigates the effect of double- or single-stage distillation and different alcohol content in 'hearts' (middle fractions) on distribution aroma volatiles undesirable compounds (methanol, hydrocyanic acid, ethyl carbamate) during plum brandies. Irrespective method used, first fractions ('heads') included mainly aliphatic aldehydes, acetals esters as well higher alcohols (1-propanol, 2-methyl-1-propanol, 1-butanol, 2-methyl-1-butanol 3-methyl-1-butanol). Furfural, 1-hexanol,...

The probiotic properties of the yeast Saccharomyces boulardii are fairly well recognised, and research into use this strain in fermentation processes has been ongoing for several years. In article, we have described results to evaluate distillery potential S. yeast. Compared Ethanol Red Thermosacc Dry yeast, formed slightly different amounts volatile compounds fermented available sugars less vigorously. final ethanol concentration by was close that observed strains. Rye distillates with an...

Sugar beet and intermediates of sugar processing are considered to be very attractive feedstock for ethanol production due their content fermentable sugars. In particular, the into is considerably facilitated because it does not require pretreatment or enzymatic treatment in contrast from starch raw materials. Moreover, advantage thick juice high solid substance saccharose which eliminates problems with storability this feedstock.The objective study were investigate bioethanol worts effects...

Large amounts of waste biomass are generated in sugar factories from the processing beets. After diffusion with hot water to draw beet pieces, a wet material remains called pulp. In this study, pulp was enzymatically depolymerized, and obtained hydrolyzates were subjected fermentation processes. Bioethanol, biomethane, biohydrogen produced directly substrate or combined mode. Stillage, distillery by-product, used as feedstock for anaerobic digestion. During biosynthesis ethanol, most...

The objective of this study was to determine the efficiency rye and barley starch hydrolysis in mashing processes using cereal malts as a source amylolytic enzymes starch, establish volatile profile obtained agricultural distillates. In addition, effects pretreatment method unmalted grains on physicochemical composition prepared mashes, fermentation results, distillates were investigated. raw materials used grains, well corresponding malts. All experiments first performed semi-technical...

Volatile sulfur compounds (VSCs) play an important role in the aroma profile of fermented beverages. However, because their low concentration samples, analysis is difficult. The headspace solid-phase microextraction (HS–SPME) technique coupled with gas chromatography and mass spectrometry (GC–MS) one methods successfully used to identify VSCs wine beer samples. this method encounters more obstacles when spirit beverages are analyzed, as ethanol content matrix decreases sensitivity. In work,...

Despite the significant progress in research, problem of finding an efficient method for producing bioethanol from renewable lignocellulosic waste materials remains unresolved. Our investigation aimed to assess efficacy ethanol production sugar beet pulp (SBP) utilising various approaches, including pretreatment variations, enzymatic processes, and microbial hydrolysis. research involved using post-cultivation concentrate T. viride LOCK 0588 grown SBP-based medium as a source enzymes. The...

This study investigates the eff ect of ageing on qualitative and quantitative composition plum distillate in contact with oak wood chips.Maturation was performed lightly toasted French (Quercus sessifl ora Quercus robur) chips or made from fragments empty barrels that had been used for cognac.The ects chip dose, process temperature, system (static circulatory) ultrasound treatment were assessed.Maturation samples resulted higher levels extractable organics (including tannins) colour changes,...

Spent yeasts, a co-product from fermentation processes, are source for unconvential autolysis processes. In this study, five post-fermentation yeast strains that often used in processes were used: Saccharomyces cerevisiae Ethanol Red (Lessafre), Kluyveromyces marxianus LOCK 0026, K. NCYC 179, Scheffersomyces stipitis 1541 and Pichia angusta 495. Autolysis was conducted at 50°C 48 hours the presence of saponins Quillaja saponaria. The concentrations proteins free amino acids autolysates...

The objective of this study was to determine the efficiency rye starch hydrolysis in mashing processes using either enzymatic preparations or cereal malts and their effect on chemical composition prepared mashes, fermentation results, as well obtained distillates. raw materials used were unmalted grain different (wheat, rye, barley malts). differences distillery depending type amount used, observed. concentrations reducing sugars twice high mashes containing 30 % reference sample with (56.2...

The character of plum brandies depends on a unique aroma profile the and microbiota present surface fruits, as well yeast used for fermentation. In this study, an evaluation effect microorganisms applied fermentation Węgierka Zwykła var. mashes processing temperature (18 °C, 30 °C) its efficiency volatile profile, taste flavour distillates obtained was performed. An estimation odour activity values (OAVs) compounds also conducted. Regardless whether carried out using Saccharomyces bayanus...

Pretreatment is a necessary step when lignocellulosic biomass to be converted simple sugars; however single-stage pretreatment often insufficient guarantee full availability of polymeric sugars from raw material hydrolyzing enzymes. In this work, the two-stage with use acid (H2SO4, HNO3) and alkali (NaOH) was applied in order increase susceptibility Jerusalem artichoke stalks (JAS) oat straw (OS) on enzymatic attack. The effect concentration reagents (2% 5% w/v) sequence composition...

Abstract The rising population and increasing demand for food place added pressure on the agricultural sector to maintain high process efficiency while implementing environmentally friendly methods. In this study, we investigate effect of pre-hydrolysis native rye starch its influence yield ethanol obtained by simultaneous saccharification fermentation (SSF) from gravity mashes with 25% 28% w −1 dry matter content. Fermentation was carried out in a 3-day system at temperature 35 ± 1 °C using...

In this study, we evaluate potato pulp waste as a potential raw material for obtaining yeast biomass. A portion of the carbohydrates in can thereby be converted into more valuable protein. The was analyzed terms protein and ash content, dry mass, simple sugars, starch content. Two kinds hydrolysis were performed (thermo-acidic enzymatic) to produce media cultivating Candida guilliermondii Pichia stipitis. hydrolysates post-cultivation leachates by High Performance Liquid Chromatography...

Abstract BACKGROUND: Among ethanol production technologies, attention should be focused towards simultaneous saccharification and fermentation of native starch with enzymes capable its degradation without prior gelatinization. Selection process conditions makes it possible to achieve high efficiency the reduce costs ethanol. RESULTS: This study determined effect hydrolysis triticale based on results their concentration by‐products in distillates obtained. The pre‐activation acid α‐amylase is...

The aim of this study was to evaluate the influence different starch liberation and saccharification methods on microbiological contamination distillery mashes. Moreover, effect hop α-acid preparation for protection against microbial infections assessed. quality agricultural distillates also evaluated. When applying pressureless (PLS) malt as a source amylolytic enzymes, lactic acid bacteria count in mashes increased several times during fermentation. obtained using pressure-thermal method...

This research shows the effect of dilute acid pretreatment with various sulfuric concentrations (0.5-2.0% [wt/vol]) on enzymatic saccharification and fermentation yield rye straw. After pretreatment, solids straw were suspended in Na citrate buffer or post-pretreatment liquids (prehydrolysates) containing sugars liberated after hemicellulose hydrolysis. Saccharification was conducted using enzymes dosage 15 25 FPU/g cellulose. Cellulose rate enhanced by performing hydrolysis sodium...

This study investigates the effect of treatment with activated carbon and other adsorbents on chemical composition organoleptics a barley malt-based agricultural distillate. Contact is one methods by which quality raw distillates spirit beverages can be improved. Samples placed in contact 1 g (SpiritFerm) per 100 ml distillate ethanol content 50% v/v for h showed largest reductions concentrations most volatile compounds (aldehydes, alcohols, esters). Increasing dose adsorbent to over ml-1...

Abstract Background The main problem encountered during processing of cereals in distilleries, particular by pressureless methods, is the relatively high viscosity mashes that turn retards their fermentation. It caused extraction (along with starch) pentosans, ß‐glucans, cellulose and hemicelluloses from cereal grains . Results Experiments carried out within this work centered on determination effect treatment corn xylanase, pullulanase, cellulase enzyme complex cellobiase chemical...

This study set out to assess the acetone content in rye sweet mashes prepared using thermal-pressure method of starch liberation, and investigate formation 2-propanol during fermentation process. In first experiments, we evaluated correlation between color furfural industrially produced (n = 37). The L * value was negatively correlated with both furfural, while chromatic parameters a b yellowness index (YI) had strong positive correlations (r > 0.9) 0.8 for r 0.9 YI). second assessed...