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Innovation Africa
Type: Book
ISBN: 978-1-78560-310-5

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Article
Publication date: 8 May 2018

Arunothai Juemanee, Kongkarn Kijroongrojana, Mutita Meenune and Wilatsana Posri

The purpose of this paper is to explore and compare consumer perceptions of unpolished pigmented rice and milled white rice between unfamiliar and typical consumers.

Abstract

Purpose

The purpose of this paper is to explore and compare consumer perceptions of unpolished pigmented rice and milled white rice between unfamiliar and typical consumers.

Design/methodology/approach

This study first employed focus groups to explore attitudes and habits relating to rice consumption among British subjects. A sensory descriptive analysis method, flash profiling (FP), was then applied on consumer panels in the UK and Thailand to gain perceived sensory quality of unfamiliar and typical rice samples. The sensory profiles generated by British and Thai panellists were analysed by generalised procrustean analysis (GPA) and compared based on perceived attributes, dominant characteristics and repeatability.

Findings

Focus group results suggested that consumer familiarity with rice might influence preferred rice textural quality. The prominent textures of stickiness and bittiness of unpolished pigmented rice were negatively associated with perceived quality in the UK participants. The sensory profiles generated by GPA consisted of similarity with darkness of colour and sweet/earthy type odours that are key dominant characteristics of the Thai pigmented rice.

Practical implications

The research has provided sensory information of the unpolished pigmented rice as compared with milled white rice. The information gives insights on product development directions for export and further research on rice processing and cooking instructions.

Originality/value

This study is the first to apply sensory evaluation in a cross-cultural comparison of pigmented rice.

Details

British Food Journal, vol. 120 no. 5
Type: Research Article
ISSN: 0007-070X

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Article
Publication date: 11 October 2019

Joko Mariyono

The purpose of this paper is to evaluate the implications of and assess the economic and sustainable impact of environmentally friendly technological packages introduced…

Abstract

Purpose

The purpose of this paper is to evaluate the implications of and assess the economic and sustainable impact of environmentally friendly technological packages introduced into agribusiness players in the centre of chilli-producing regions of Indonesia.

Design/methodology/approach

This study used a theory of optimisation in production as a fundamental analysis. Producers are assumed to maximise profit by allocating rational amounts of inputs as the components of technological packages. A combination of qualitative and quantitative methods was used. The rate of technology adoption was evaluated, and agribusiness performance was measured using an economic advantage and technical efficiency. Data were compiled using group discussions and individual surveys.

Findings

The packages of technologies improved economic and sustainability performance of agribusiness resulting from efficient use of agrochemicals and water resource, and increase the production. Socio-economic and technical factors influenced performance farmers, as agribusiness players responded positively towards the ecological technology packages.

Research limitations/implications

The sustainability of agribusiness was indicated by the reduction in agrochemical use and by the efficient use of water irrigation. There are other measures of sustainability, which are beyond this study. Additional studies are expected to fill the gap.

Practical implications

Considerable potential exists for broad adoption of these technological packages in Indonesia if they are disseminated effectively and in a close partnership with local extension agencies, farmers’ organisations, local non-governmental organisations and private sectors.

Originality/value

This study provides a realistic representation of a current condition because this is an empirical study conducted at the grass-root level. Sustainability of agribusiness practices was achieved with ecological technological packages.

Details

International Journal of Productivity and Performance Management, vol. 69 no. 5
Type: Research Article
ISSN: 1741-0401

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Article
Publication date: 24 October 2019

Pimpinan Somsong, Regina C. McNally and Chi-Ming Hsieh

The purpose of this paper is to investigate consumer preferences towards innovative rice products, and cross-cultural determinants of customers’ perceived value and loyalty.

Abstract

Purpose

The purpose of this paper is to investigate consumer preferences towards innovative rice products, and cross-cultural determinants of customers’ perceived value and loyalty.

Design/methodology/approach

A self-administered survey was designed to obtain participants’ perceptions about Thai rice, and preferences towards innovative Thai rice products. A total of 937 surveys were distributed and 908 valid surveys were returned, yielding a 96.7 per cent overall response rate. Confirmatory factor analysis was used to assure the reliability and validity of the measures used in the survey instrument. Structural equation modelling was employed to assess the five hypothesised relationships between the four elements of the marketing mix, customer perceived value, and post-purchase behaviour, and to compare the path coefficients across the two cultural groups.

Findings

The findings reported herein show that eastern and western customers’ perceptions of marketing mix variables positively impact their perceptions of value, in turn, enhancing their loyalty to Thai rice. A successful marketing strategy should meet changing customer needs through adopting new products, services and unique marketing mix bundles. Such strategies should be tailored to the differing needs across cultures, and can address issues arising from changing competitive and environmental landscapes.

Research limitations/implications

The first limitation concerns the scope of the study. Specifically, the authors only conducted surveys during a two-month time period in 2018; the sampling sites were limited to several shopping malls in Bangkok; and the authors surveyed a high proportion of young, single, educated participants. The second limitation pertains to the selection and adaptation of constructs and their observed variables (such as the 4P indicators). Most of the observed variables were selected based on a literature review and the opinions of the scholars who participated in this study.

Practical implications

These results should be beneficial to members of the international rice industry, Thai rice exporters, the Thai government and to academics. Long-term success will be supported by focused attention on target segments and launch of innovative rice products that match differing preferences across nationalities.

Originality/value

Understanding consumers’ perspectives and preferences are critical to appropriate positioning and marketing of value-added Thai rice products. This study represents one of the first attempts to integrate marketing mix decisions, customers’ perceived value and loyalty within a Thai rice purchase behaviour context across eastern and western customers.

Details

British Food Journal, vol. 122 no. 1
Type: Research Article
ISSN: 0007-070X

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Abstract

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Energy Economics
Type: Book
ISBN: 978-1-78756-780-1

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Article
Publication date: 4 January 2013

Altaf H. Basta, Houssni El‐Saied and Vivian F. Lotfy

The purpose of this paper is to study the possibility of preparing high performance, agro‐based composites from rice straw, using eco‐polyalcohol polymers‐based adhesive…

Abstract

Purpose

The purpose of this paper is to study the possibility of preparing high performance, agro‐based composites from rice straw, using eco‐polyalcohol polymers‐based adhesive system. The utilization of rice straw (undesirable biowastes) for the production of high quality biocomposite products, will add economic value, help to reduce the environmental impact of waste disposal and, most importantly, provide a potentially inexpensive alternative to the existing commercial artificial wood‐panels.

Design/methodology/approach

Simple synthesizing and optimizing the polyalcohol polymers‐based non‐toxic adhesive system were carried out, by blending corn starch, as natural polyalcohol polymer with polyvinyl alcohol, as synthetic polyalcohol polymers‐based adhesive (St/PV adhesive), at temperature ∼75°C. The percentages of adhesive components, type of starch, bonding temperature and time were optimized. Assessment of the synthesized adhesive was performed from its adhesion behavior (bond strength), in comparison with commercial thermosetting resin (urea‐formaldehyde), as well as the properties (mechanical and physical properties) of the composites produced. The effects of amount and type of water resistance co‐additives (paraffin wax and polyester), on mechanical properties of RS‐based composite were also optimized.

Findings

The promising adhesive system exhibits improved performance over a previously commercially HCHO‐based adhesive (UF), and results bonding strength 9.8 N/mm2, as well as MOR, IB and TS of RS‐based composites up to 31 N/mm2, 0.49 N/mm2 and 20%, respectively.

Research limitations/implications

Through the studied eco‐adhesive with relatively high natural polyalcohol polymer (starch) in presence of water‐resistance additive (PE) provided a good bonding strength and comparative RS‐based composite properties, with that produced from commercial UF. For the mechanical properties (MOR and IB) are complied the standard values; while water resistance is still higher. Further study is needed to solve this problem.

Practical implications

The approach provided a HCHO‐free adhesive with good bonding strength, comparative board strength and water resistance, reasonable working life, and without formaldehyde emission. Starch‐based adhesive with low percentages of polyvinyl alcohol is considered a promising inexpensive alternate adhesive in wood industry based on rice straw wastes, which traditionally required expensive pMDI.

Originality/value

The paper provides a potential way to utilise undesirable rice by‐product (RS), corn starch as industrial raw material. This will benefit farmers significantly. Meanwhile, the modified starch adhesive with low percentage of PVA is promising to partly or completely replace urea formaldehyde resin and pMDI that are mainly used in wood industry, or pMDI in RS‐based artificial wood, avoiding formaldehyde emission or toxic gases during exposed to burning, and reducing the dependence on petroleum products.

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Article
Publication date: 14 June 2021

Juliana Villasante, Johanan Espinosa-Ramírez, Esther Pérez-Carrillo, Erick Heredia-Olea and MariaPilar Almajano

Solid-state fermentation (SSF) has been highlighted as an alternative to obtain valuable compounds using agro-industrial wastes as a substrate. The present study evaluated…

Abstract

Purpose

Solid-state fermentation (SSF) has been highlighted as an alternative to obtain valuable compounds using agro-industrial wastes as a substrate. The present study evaluated the impact of extrusion combined with SSF on the production of phenolic compounds and their antioxidant activity using pecan nut shell (PWS) as a substrate.

Design/methodology/approach

PWS and extruded pecan nut shell (PWSE) were fermented for 120 h at 30°C using Aspergillus oryzae (A. oryzae). Samples were withdrawn from incubator at 6 h, 12 h and then every 12 h until 120 h fermentation. PWS and PWSE samples were extracted. The total phenolic content (TPC) and radical scavenging activity (RSA) extracts were characterized from the resulting extracts.

Findings

The use of PWSE yielded higher A. oryzae biomass and at a higher rate after 120 h of fermentation (PWS 75.74% vs PWSE 87.50%). In general, the TPC and the RSA increased with fermentation time. However, the PWSE yielded significantly higher (p < 0.05) TPC and RSA values after SSF in comparison to the nonextruded PWS. Condensed tannins showed different trends depending on the fermented substrate. Overall, results showed that the extrusion pretreatment joint with the SSF represents a good alternative to raise the phenolic content and antiradical activity of lignocellulosic materials such as PWSs.

Originality/value

This study offers valuable information that may be used by the pecan walnut industry to valorize the shell coproduct as a substrate to produce functional ingredients or fungal enzymes.

Details

British Food Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0007-070X

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Article
Publication date: 27 July 2021

Zhihai Yang, Ning Yin, Amin William Mugera and Yumeng Wang

This paper analysed survey data of 715 rice-producing households in China to assess the determinants of adoption of five mutually exclusive soil conservation practices…

Abstract

Purpose

This paper analysed survey data of 715 rice-producing households in China to assess the determinants of adoption of five mutually exclusive soil conservation practices (SCPs) and their impact on rice yield and chemical fertiliser use.

Design/methodology/approach

The multinomial endogenous treatment effects model was used to account for selection bias and endogeneity arising from both observed and unobserved heterogeneity.

Findings

Farms that adopted SCPs as a package experienced an increase in rice yield and decrease in chemical fertiliser use. Adoption of SCPs as a package led to a 12.0% increase in yield and 15.2% decrease in chemical fertiliser use; these results have policy implications for the non-point source pollution control in the agricultural sector. In contrast, adoption of straw retention only significantly reduced yield by 4.9% and increased chemical fertiliser use by 18.1%.

Originality/value

The authors evaluate and compare multi-type of SCPs, such as straw retention, deep tillage and use of organic fertiliser, separately or in combination, and their impacts on smallholder farmers’ rice yield and chemical fertiliser usage.

Details

China Agricultural Economic Review, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1756-137X

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Article
Publication date: 1 December 2000

A.M.A. Nada, M.A. Yousef, K.A. Shaffei and A. Salah

Bagasse and rice straw lignins undergo different treatments, e.g. acid hydrolysis, oxidation with hydrogen peroxide and thermal treatment, before being used as a partial…

Abstract

Bagasse and rice straw lignins undergo different treatments, e.g. acid hydrolysis, oxidation with hydrogen peroxide and thermal treatment, before being used as a partial replacement for phenol in phenol formaldehyde resin. These treatments improved the resin formation properties of the lignin. The effect of these treatments on the improvement of the properties of the resin produced has the following sequence: lignin treated with HCl (1‐3N) > lignin treated with H2O2 (1‐3 per cent) > thermally treated lignin (120‐140°C). The improvement of the properties of the resin produced from bagasse lignin is greater than that produced from rice straw lignin. The treatment of rice straw lignin with acid increases its ability to form a resin. Treatment of rice straw lignin with acid leads to its increased concentration in the phenol lignin formaldehyde resin with good properties. In general, the resin produced from treated lignin has better properties than resin produced from untreated lignin.

Details

Pigment & Resin Technology, vol. 29 no. 6
Type: Research Article
ISSN: 0369-9420

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Article
Publication date: 9 November 2010

W. Wang, X. Zhang, F. Li and C. Qi

The purpose of this paper is to develop an environmental adhesive from defatted rice bran (RB) to increase its economic value and provide environmentally friendly products…

Abstract

Purpose

The purpose of this paper is to develop an environmental adhesive from defatted rice bran (RB) to increase its economic value and provide environmentally friendly products for the wood industry.

Design/methodology/approach

The powder was mixed with water in a flask. After pH adjustment, potassium permanganate (KMnO4) solution was added. Then the mixture was heated in a shaking water bath. After maintaining the mixture at 70°C for 1 h, poly(vinyl alcohol) (PVA) powder was added to the slurry and heated at the same temperature for a further 0.5 h. The adhesive thus prepared was used to bond veneers to evaluate its bonding strength and analysed by IR. The optimised RB adhesive was mixed with phenol formaldehyde resin in a ratio of 8:8 to bond straw particleboard. Silane was used to improve the properties of the straw particleboard.

Findings

As an economically renewable resource, RB has potential use in the preparation of adhesives. When RB powder was treated with KMnO4 and PVA at pH 6, the resulting adhesive was able to produce a bonding strength of 1.29 MPa. Silane was found to be a useful coupling agent in the bonding of straw particleboard. Once the board had been bonded with the mixed adhesive, it was found to have a bending strength of 11.9 MPa and a modulus of elasticity of 2.2 GPa.

Research limitations/implications

Chemical change was not obvious during RB modification, which led to a low water resistance. Further research is needed to modify the method.

Practical implications

RB adhesive was dark in colour, which limits its use for light‐coloured wood. Because of its lower water resistance, this adhesive has to be mixed with other synthetic resins to meet requirements.

Originality/value

A new adhesive product was developed for the wood industry from economic RB. This will contribute to environmentally friendly wood products and the effective utilisation of agricultural residues.

Details

Pigment & Resin Technology, vol. 39 no. 6
Type: Research Article
ISSN: 0369-9420

Keywords

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