Abstract
Hazelnut shells are generated in large amounts from hazelnut processing. Currently, it is used as fuel. However, reuse in bioprocessing can release remarkable content of sugars, which can be used for production of additives such as enzymes widely used in the food industry. Thus, the present study was undertaken to determine the effect of single and combined chemical and enzymatic hydrolysis on the production of fermentable sugars from hazelnut shells. Batch hydrolysis was carried out under various conditions to select optimal conditions. The results revealed that an optimal sugar concentration of about 19.2 g/l was achieved after 3.42% (w/w) dilute acid pretreatment conducted at 130°C for 31.7 min and enzymatic load of 200 U/g for 24 h. The overall sugar yield was calculated as 72.4% (g reducing sugar/g total carbohydrate). Therefore, hazelnut shells can be considered a suitable feedstock to compete with synthetic sugars used in fermentations.
Acknowledgements
Funding for this study was provided by METU Research Fund Project, BAP-03-14-2011-002 at the Department of Food Engineering, Middle East Technical University, Turkey. The authors would like to thank Dr Tamay Seker and Ceren Biler at the Middle East Technical University Central Laboratory, Ankara, Turkey, for assistance with HPLC analyses.
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©2014 by De Gruyter
Articles in the same Issue
- Frontmatter
- Selected Papers from MAS2013 Workshop
- Special section “Selected Papers from the Workshop on Modeling and Simulation of Food Processing and Operations of the MAS 2013 Conference (Athens, September 25–27, 2013)”
- Safety and Security in Fresh Good Supply Chain
- Performance Analysis of the Water Supply System of a Dairy Company by Means of an Advanced Simulation Tool
- Optimal Design of an Olive Oil Mill by Means of the Simulation of a Petri Net Model
- Original Research Articles
- Moisture Sorption Isotherms, Isosteric Heat of Sorption and Glass Transition Temperature of Murtilla (Ugni molinae T.) Berry
- Salt and Acid-Induced Soft Tofu-Type Gels: Rheology, Structure and Fractal Analysis of Viscoelastic Properties as a Function of Coagulant Concentration
- Heat Transfer during Steaming of Bread
- Kinetics and Thermodynamics of Gum Extraction from Wild Sage Seed
- Formation and Stability of Vitamin E Enriched Nanoemulsions Stabilized by Octenyl Succinic Anhydride Modified Starch
- Investigation on a Soft Tubular Model Reactor Based on Bionics of Small Intestine – Residence Time Distribution
- Comparison of Physicochemical and Gel Characteristics of Hydroxypropylated Oat and Wheat Starches
- Environomical Analysis and Mathematical Modelling for Tomato Flakes Drying in a Modified Greenhouse Dryer under Active Mode
- Extraction Kinetics and Properties of Proanthocyanidins from Pomegranate Peel
- An Investigation of Energy Consumption, Solar Fraction and Hybrid Photovoltaic–Thermal Solar Dryer Parameters in Drying of Chamomile Flower
- The Adsorption of Undesirable Impurities from Sunflower Oil on the Granulated Sorbents Based on Kaolin Clay
- “Bare” or “Gloved” Hands: A Study on the Production of Safe Food
- Physicochemical Characterization of Arrowroot Starch (Maranta arundinacea Linn) and Glycerol/Arrowroot Starch Membranes
- Optimization of Gluten-Free Cake Prepared from Chestnut Flour and Transglutaminase: Response Surface Methodology Approach
- Estimation of Equilibrium Moisture Content of Pistachio Powder through the ANN and GA Approaches
- Modeling of Furfural and 5-Hydroxymethylfurfural Content of Fermented Lotus Root: Artificial Neural Networks and a Genetic Algorithm Approach
- Physicochemical Properties of Chilled Abalone as Influenced by Washing Pretreatment in Citric Acid Combined with High Pressure Processing
- Synergetic Effects of Pulsed Electric Field and Ozone Treatments on the Degradation of High Molecular Weight Chitosan
- Physical, Thermal and Water-Sorption Properties of Passion Fruit Seeds
- Hydrolysis of Hazelnut Shells as a Carbon Source for Bioprocessing Applications and Fermentation
- Variations in Main Flavor Compounds of Freshly Distilled Brandy during the Second Distillation
- Characterization and Semiquantitative Analysis of Volatile Compounds in Six Varieties of Sugarcane Juice
- Influence of Citric Acid Pretreatment on Drying of Peach Slices
- Degradation Kinetics of Bioactive Compounds and Antioxidant Activity of Pomegranate Arils during the Drying Process
- Short Communications
- Effect of Sucrose Addition on Rheological and Thermal Properties of Rice Starch–Gum Mixtures
- Effect of Pulsed Electric Field on Freeze-Drying of Potato Tissue
Articles in the same Issue
- Frontmatter
- Selected Papers from MAS2013 Workshop
- Special section “Selected Papers from the Workshop on Modeling and Simulation of Food Processing and Operations of the MAS 2013 Conference (Athens, September 25–27, 2013)”
- Safety and Security in Fresh Good Supply Chain
- Performance Analysis of the Water Supply System of a Dairy Company by Means of an Advanced Simulation Tool
- Optimal Design of an Olive Oil Mill by Means of the Simulation of a Petri Net Model
- Original Research Articles
- Moisture Sorption Isotherms, Isosteric Heat of Sorption and Glass Transition Temperature of Murtilla (Ugni molinae T.) Berry
- Salt and Acid-Induced Soft Tofu-Type Gels: Rheology, Structure and Fractal Analysis of Viscoelastic Properties as a Function of Coagulant Concentration
- Heat Transfer during Steaming of Bread
- Kinetics and Thermodynamics of Gum Extraction from Wild Sage Seed
- Formation and Stability of Vitamin E Enriched Nanoemulsions Stabilized by Octenyl Succinic Anhydride Modified Starch
- Investigation on a Soft Tubular Model Reactor Based on Bionics of Small Intestine – Residence Time Distribution
- Comparison of Physicochemical and Gel Characteristics of Hydroxypropylated Oat and Wheat Starches
- Environomical Analysis and Mathematical Modelling for Tomato Flakes Drying in a Modified Greenhouse Dryer under Active Mode
- Extraction Kinetics and Properties of Proanthocyanidins from Pomegranate Peel
- An Investigation of Energy Consumption, Solar Fraction and Hybrid Photovoltaic–Thermal Solar Dryer Parameters in Drying of Chamomile Flower
- The Adsorption of Undesirable Impurities from Sunflower Oil on the Granulated Sorbents Based on Kaolin Clay
- “Bare” or “Gloved” Hands: A Study on the Production of Safe Food
- Physicochemical Characterization of Arrowroot Starch (Maranta arundinacea Linn) and Glycerol/Arrowroot Starch Membranes
- Optimization of Gluten-Free Cake Prepared from Chestnut Flour and Transglutaminase: Response Surface Methodology Approach
- Estimation of Equilibrium Moisture Content of Pistachio Powder through the ANN and GA Approaches
- Modeling of Furfural and 5-Hydroxymethylfurfural Content of Fermented Lotus Root: Artificial Neural Networks and a Genetic Algorithm Approach
- Physicochemical Properties of Chilled Abalone as Influenced by Washing Pretreatment in Citric Acid Combined with High Pressure Processing
- Synergetic Effects of Pulsed Electric Field and Ozone Treatments on the Degradation of High Molecular Weight Chitosan
- Physical, Thermal and Water-Sorption Properties of Passion Fruit Seeds
- Hydrolysis of Hazelnut Shells as a Carbon Source for Bioprocessing Applications and Fermentation
- Variations in Main Flavor Compounds of Freshly Distilled Brandy during the Second Distillation
- Characterization and Semiquantitative Analysis of Volatile Compounds in Six Varieties of Sugarcane Juice
- Influence of Citric Acid Pretreatment on Drying of Peach Slices
- Degradation Kinetics of Bioactive Compounds and Antioxidant Activity of Pomegranate Arils during the Drying Process
- Short Communications
- Effect of Sucrose Addition on Rheological and Thermal Properties of Rice Starch–Gum Mixtures
- Effect of Pulsed Electric Field on Freeze-Drying of Potato Tissue