Estimation of Normative Supply Function and Price Elasticity of Hazelnut: A Case Study in Turkey

Kılıç, Osman; Ceyhan, Vedat; Cinemre, Hüseyin Avni; Bozoğlu, Mehmet; Sumelius, John

doi:10.21273/hortsci.43.3.753

Cited by 2 publications

(1 citation statement)

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“…Turkey has a rich agricultural biomass stream and hazelnut is one of the most important agricultural products [1]. Approximately 70-75 % of the global hazelnut production is in the Black-Sea region of Turkey [2] and hazelnut shells, a residue of hazelnut processing, offer a great opportunity for production of value added products. Current use of hazelnut shells is limited mainly to boiler fuel and landscaping [3].…”

Section: Introductionmentioning

confidence: 99%

Bioconversion of Alkali Pretreated Hazelnut Shells to Fermentable Sugars for Generation of High Value Products

Uzuner

Shivappa

Çekmecelioğlu

2016

Waste Biomass Valor

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Hazelnut shells are lignocellulosic by-products of hazelnut processing. As the shells are rich in cellulose and hemicellulose, they have high potential as a raw material for production of food enzymes, biofuel, and various chemicals (acetic acid, furfural and lignin degradation products) after bioprocessing. The objective of this study was to determine the effect of alkali pretreatment and enzymatic hydrolysis on production of fermentable sugars from hazelnut shells. The hazelnut shells were pretreated with sodium hydroxide (NaOH) at concentrations of 3-7 % (w/v) for 30-90 min at 121°C. Pretreatments were evaluated measuring delignification, solid recovery and production of reducing sugars after enzymatic hydrolysis of the pretreated biomass. Up to 20 % lignin removal was achieved and the highest reducing sugar yield of 318.3 mg/ g pretreated biomass (or 91.7 % enzyme conversion efficiency) was obtained from biomass pretreated with 3 % NaOH at a solid to liquid ratio of 1:20 for 60 min. The response surface model predicted the optimal reducing sugar production (357.2 mg/g pretreated biomass) under 3 % NaOH, 1:13 of solid to liquid ratio and 63 min of pretreatment period at 121°C. Overall, the results of this study show a promise for hazelnut shells to be used in production of value-added products.

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Section: Introductionmentioning

confidence: 99%

Bioconversion of Alkali Pretreated Hazelnut Shells to Fermentable Sugars for Generation of High Value Products

Uzuner

Shivappa

Çekmecelioğlu

2016

Waste Biomass Valor

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Türkiye Fındık Piyasası ve Politikasının Genel Bir Değerlendirmesi

Bozoğlu

Başer

Topuz

et al. 2019

Kahramanmaraş Sütçü İmam Üniversitesi Tarım Ve Doğa Dergisi

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Turkey is the biggest actor in the world hazelnut market with its production potential and policies. The aim of this paper was to assess the recent developments in the Turkish hazelnut market and policy. The time series data of hazelnut markets was taken from the internet databases of Food and Agriculture Organization (FAO), Turkish Statistical Institute (TSI), Black Sea Hazelnut Exporter Union (BSHEU), Ministry of Agriculture and Forestry (MoAF), Giresun Commodity Exchange (GCE) and Official Journal and Turkish Republic (OJoTR). Under the New Hazelnut Strategy, an area based payment has been provided to the hazelnut farmers in the authorized areas and a compensatory payment had been provided to the farmers in the unauthorized areas. Since 2001, while hazelnut areas and the export of Turkey had increased, hazelnut yield and production had decreased. Despite increases in hazelnut prices, Turkey could increase hazelnut export both in terms of quantity and value. While there is no need to limit hazelnut areas in high crop years, the government should establish a hazelnut buffer stock mechanism. The Turkish government should also create fair competition conditions for the actors in the hazelnut market with a more effective hazelnut policy.

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Estimation of Normative Supply Function and Price Elasticity of Hazelnut: A Case Study in Turkey

Cited by 2 publications

References 0 publications

Bioconversion of Alkali Pretreated Hazelnut Shells to Fermentable Sugars for Generation of High Value Products

Bioconversion of Alkali Pretreated Hazelnut Shells to Fermentable Sugars for Generation of High Value Products

Türkiye Fındık Piyasası ve Politikasının Genel Bir Değerlendirmesi

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