Hydrothermolysis of rapeseed cake in subcritical water. Effect of reaction temperature and holding time on product composition

Pińkowska, Hanna; Wolak, Paweł; Oliveros, Esther

doi:10.1016/j.biombioe.2014.03.028

Cited by 25 publications

(20 citation statements)

References 60 publications

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“…Moreover, DHs after enzyme hydrolysis for 24 h increased from 14.8 to 18.2%. Similar to our results, many researchers [7,11,19,24] confirmed the significant influence of treatment temperature and holding time on hydrothermolysis and found that the effect of holding time on DH was less than that of treatment temperature.…”

Section: Effect Of Scw Treatment On the Susceptibility Of Wg To Enzymsupporting

confidence: 91%

“…Hydrothermal treatment of WG with SCW A WG suspension (10%, w/v) was treated with SCW at temperatures ranging from 160 to 260°C for 20 min or at a constant temperature (T = 200°C) for 0-40 min as a batch process. Under the experimental conditions, SCW acted as a solvent, reagent, and catalyst [19]. The appearance of these gluten suspensions is illustrated in Fig.…”

Section: Resultsmentioning

confidence: 99%

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Enzymatic susceptibility of wheat gluten after subcritical water treatment

Hwang¹,

Kim²,

Shin

et al. 2017

Food Sci Biotechnol

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Subcritical water (SCW) hydrolysis is an alternative to traditional methods of protein hydrolysis that uses water as a reaction medium. In this study, the effect of SCW treatment on heat-induced conformational changes in wheat gluten and its relation to enzymatic susceptibility were investigated. The degree of deamidation increased rapidly from 12.5 to 47.4% with increase in the temperature range of 160-220 °C. Protein solubility increased in a similar pattern with degree of deamidation and almost all protein was solubilized after treatment with SCW at 200 °C. SCW treatment in a particular time-temperature combination results in a significant decrease in enzymatic susceptibility. After SCW treatment at 220 °C for 20 min, enzymatic susceptibility of gluten protein was exceedingly decreased to nearly complete loss. Because of excess degradation and deamidation and small molecular size (less than 6500 Da) many hydrolysis sites disappear and are difficult to access by protease.

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Section: Effect Of Scw Treatment On the Susceptibility Of Wg To Enzymsupporting

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Enzymatic susceptibility of wheat gluten after subcritical water treatment

Hwang¹,

Kim²,

Shin

et al. 2017

Food Sci Biotechnol

View full text Add to dashboard Cite

show abstract

“…These conditions can promote decarboxylation reactions leading to gas formation. 50,51 In general the S/W ratio does not significantly influence the overall carbohydrate conversion. An exception to this occurs when high temperature and low S/W ratios are used.…”

Section: Resultsmentioning

confidence: 95%

Production of fermentable species by microwave-assisted hydrothermal treatment of biomass carbohydrates: reactivity and fermentability assessments

et al. 2018

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“…The amount of total bound amino acid content in cakes before hydrothermal processing amounted to 305 ±10 g•kg -1 . The hydrothermolysis of rapeseed cake was performed in a batch reactor (Minotavr-1), at 210-220 °C, which is in consistent with previous studies on effective amino acids conversion from rapeseed cake [21]. The fermentation was conducted using the following ratios of yeast extract and rapeseed cake (% w•w -1 ): 100:0, 75:25, 50:50, 25:75 and 0:100.…”

Section: Succinic Acid Productionmentioning

confidence: 70%

Integrated Production of Biofuels and Succinic Acid from Biomass after Thermochemical Pretreatments

Kuglarz

Grűbel

2018

Ecological Chemistry and Engineering S

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The aim of this study was to develop an effective thermochemical method for treatment of industrial hemp, in order to increase its bioconversion to biofuels and bio-products. Industrial hemp was subjected to various thermochemical pretreatments using: alkaline (3 % NaOH), oxidative (3 % H2O2 at pH 11.5) and glycerol-based methods (70-90 % of glycerol, 1-3 % NaOH), prior to enzymatic hydrolysis with Cellic® CTec2/Cellic® HTec2 (15 FPU∙g−1 glucan). Innovative pretreatment with glycerol fraction (80 % glycerol content, 2 % NaOH, 12.5 % biomass loading) showed to be superior over commonly used alkaline and oxidative methods with respect to by-products generation and sugar losses. Integrated process of ethanol production from enriched cellulose fraction (172 kg EtOH∙Mg−1 of dry hemp) and succinic production from xylose-rich residue after ethanol fermentation (59 kg∙Mg−1 of dry hemp) allowed to convert about 97 % of sugars released (glucose and xylose) during enzymatic hydrolysis of pre-treated biomass. The present study showed that it is possible to replace 50 % of the costly yeast extract, used during succinic fermentation as nitrogen source, by alternative nitrogen source (rapeseed cakes) without significant deterioration of succinic yield. Pretreatment liquor after lignin precipitation (52 kg∙Mg−1 of biomass treated) exhibited a high biodegradability (92 %) and allowed to produce 420 m3 CH4/Mg VS). Results obtained in this study clearly document the possibility of biofuels (bioethanol, biogas) and bio-chemicals production from industrial hemp, in a biorefinery approach.

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Hydrothermolysis of rapeseed cake in subcritical water. Effect of reaction temperature and holding time on product composition

Cited by 25 publications

References 60 publications

Enzymatic susceptibility of wheat gluten after subcritical water treatment

Enzymatic susceptibility of wheat gluten after subcritical water treatment

Production of fermentable species by microwave-assisted hydrothermal treatment of biomass carbohydrates: reactivity and fermentability assessments

Integrated Production of Biofuels and Succinic Acid from Biomass after Thermochemical Pretreatments

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