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Article
Publication date: 3 August 2012

Emin Yilmaz and Buket Aydeniz

The objective of this study is to evaluate the physico‐chemical and sensorial characteristics of some commercial green table olives. Also, it seeks to elaborate the…

Abstract

Purpose

The objective of this study is to evaluate the physico‐chemical and sensorial characteristics of some commercial green table olives. Also, it seeks to elaborate the sensorial background of consumer preferences of different green table olives.

Design/methodology/approach

Four green table olive samples (Çelebi, Domat, Kaba, and Ayvalık) commonly consumed in Turkey were chosen and collected from a local producer. Dimensional measures, salt content, pH value, oil content, titrable acidity, L value, a* value, b* value and texture of samples were assessed by the AOAC methods. A panel described and measured the appearance (greenness, yellowness, globeness), aroma (fresh olive, vinegary, soapy, musty), flavour (sour, salty, bitter, hay, oily) and texture properties (firmness, flesh/stone adherence, fibrousness, watery). In addition, 50 consumers evaluated hedonic values.

Findings

The salt content, pH value, oil content, titrable acidity, L value, a* value, b* value and texture of samples were found to following values 2.91‐5.46 percent, 2.80‐3.97, 4.67‐18.71 percent, 0.59‐1.40 percent, 49.96‐69.56, 1.35‐17.91, 19.57‐45.47 and 434.1‐895.7 g. Although prepared with the same technique, many properties of the olives were found different. This difference affected consumer preference and buying intentions as well.

Research limitations/implications

The paper provides scientific data for researchers to design similar sensory descriptive analyses for different table olive samples.

Originality/value

The paper is helpful both to consumers and traders to determine the proximate and sensory attributes of commercial green olive samples.

Details

British Food Journal, vol. 114 no. 8
Type: Research Article
ISSN: 0007-070X

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Article
Publication date: 14 July 2021

Jessica Maalouf, Jennifer C. Tomazou, Stephanie Azar, Christelle Bou-Mitri, Jacqueline Doumit, Amira Youssef, Roland B. Andary, Wadih A. Skaff and Milad G. El Riachy

This study aims to identify the effect of selected agro-industrial factors associated with the olive oil phenolic composition, total phenolic content (TPC), antioxidant…

Abstract

Purpose

This study aims to identify the effect of selected agro-industrial factors associated with the olive oil phenolic composition, total phenolic content (TPC), antioxidant capacity and oxidative stability index (OSI). The study also aims to assess the relationship between the quality indices and each of the individual phenol, TPC, antioxidant capacity and OSI.

Design/methodology/approach

Olive oil samples (n=108) were collected from Lebanese northern (Akkar and Zgharta-Koura) and southern (Hasbaya and Jezzine) regions, at three harvesting times (early, intermediate, late) and using different types of mills (traditional, sinolea, two- and three-phase decanters). The samples were analyzed using official standard methods.

Findings

The highest TPC, antioxidant capacity and OSI were obtained in early harvested olive oil, using two-phase decanters for TPC and three-phase decanters for antioxidant capacity and OSI. A prediction model, including the free acidity, K232, TPC, C18:2, C18:0, tyrosol and apigenin, was obtained; it allowed to predict very highly significantly the OSI (p < 0.001). Apigenin, tyrosol and C18:2 recorded the highest standardized coefficients (ß^+= 0.35) and thus had the highest influence on OSI. As per antioxidant capacity of olive oil, another very highly statistically significant prediction model was constructed (p < 0.001). It included only two predictors, oleacein and TPC, with the latter having the most influence (ß^+= 0.37).

Originality/value

The overall results highlighted the detrimental effects of agro-industrial factors on olive oil chemical composition, and this contributes significantly to improve olive oil’s quality and characteristics, which are important for the product economical and nutritional values.

Details

Nutrition & Food Science , vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0034-6659

Keywords

Content available
Article
Publication date: 7 June 2021

Giuseppe Di Vita, Raffaele Zanchini, Giovanni Gulisano, Teresina Mancuso, Gaetano Chinnici and Mario D'Amico

Urban metropolitan consumers react to the different qualitative categorizations of the product thus creating homogeneous market segments. The aim of this paper is to…

Abstract

Purpose

Urban metropolitan consumers react to the different qualitative categorizations of the product thus creating homogeneous market segments. The aim of this paper is to identify specific market segments which allow for the definition of homogeneous olive oil consumer targets.

Design/methodology/approach

This study was based on the stated preferences of consumers and emphasizes the role that different quality scales of olive oil have in the eye of the consumer. The data, collected through a questionnaire, were analysed by means of inferential and multivariate statistics techniques, that is, the study specifically entailed a factorial and cluster analysis.

Findings

This paper explores olive oil market segments broken down by the different quality levels of existing products, thus trying to identify main consumer preferences. Our outcomes suggest the existence of three main quality classes of olive oil consumer: basic, popular and premium.

Research limitations/implications

Even though we gathered data and information from a broad sample, the study does not fully reflect the average Italian population since we based our study on a convenience sample of northern Italian consumers. A more extended sample is needed to test our hypothesis in other regional areas.

Practical implications

The outcomes derived from this study provide useful insights both for marketers and olive oil producers by allowing more efficient strategic decisions in terms of product segmentation.

Originality/value

This study, aimed at matching olive oil market segments and consumer preferences, shows the existence of three well-defined quality classes of olive oil consumer: basic, popular and premium. In addition, this study ascertains for the first time how the attitude towards local products is positively influenced by family origin as a result of an inter-generational attitude.

Details

British Food Journal, vol. 123 no. 13
Type: Research Article
ISSN: 0007-070X

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Book part
Publication date: 30 June 2017

Dulce Freire

Over the last years, the olive oil produced in the Mediterranean countries has obtained growing success in international markets. Olive oil has benefited from the growing…

Abstract

Over the last years, the olive oil produced in the Mediterranean countries has obtained growing success in international markets. Olive oil has benefited from the growing appetite of European and World consumers for products that are part of the so-called Mediterranean diet. For centuries, the olive crops were vital for communities that have occupied the territories bordering the Mediterranean Sea. Despite this long historical drive, this chapter analyses changes that took place since the Second World War. It is recognized that in the decades that followed the end of the war the transformation of western agriculture and rural societies together with commercial and cultural transnational connections have accelerated. Even in peripheral areas, such as Portugal, different processes of globalization have developed, making it necessary to identify the mechanisms that have established the connections to distant territories. Focused on the Portuguese case, this chapter examines how olive oil has contributed to inserting this peripheral territory in the global trade network. A path analysis of this crop is used as a lens to observe how various factors (political, ecological, technical, commercial, social and institutional) have been combined to inhibit or stimulate the inclusion of these rural territories in the dynamics of globalization.

Details

Transforming the Rural
Type: Book
ISBN: 978-1-78714-823-9

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Book part
Publication date: 29 November 2019

Carla Lousas, Humberto Ribeiro, Sandra Alves and Cláudia Veloso

Since the dawn of the civilizations that olive has been playing a critical role on both the society and the economy. Indeed, one can argue that olive and olive oil were as…

Abstract

Since the dawn of the civilizations that olive has been playing a critical role on both the society and the economy. Indeed, one can argue that olive and olive oil were as critical as they shaped a form of culture, a seminal pillar that supported the Mediterranean civilizations and that has since then spread worldwide, influencing others. As waves and tides, the use of olive and olive oil has certainly met low points, to the extent that its use even became to be considered old fashioned more recently, when the traditional Mediterranean food and culture started to be jeopardized by very different modern ways of living. Nevertheless, despite defying challenging conditions, stubbornly as always, the Mediterranean diet not only continues to prevail, but keeps granting the admiration of diverse strands of the society and science, being notoriously evident the set of recent research that points to its health benefits, having olive oil as the cornerstone, a vegetable fat, considered to be highly healthy, as it enhances the control of important health indicators, such as the bad cholesterol, serving for nutritional and therapeutic uses, and preventing the occurrence of a number of diseases, including cardiovascular problems and some forms of cancer.

Taking into consideration this framework, the research presented in this book is focused on the examination of the main trends on olive and olive oil in the Iberian Peninsula, from production to retail and consumption, by analyzing several data sets covering recent decades. In terms of findings for more recent years, it was possible to conclude that despite the increasing recognition of the benefits of olive and olive oil by the society, and despite the increase in olive production, the consumption of olive oil has been decreasing internally, being replaced by increases in exports. This is most probably due to the economic conditions that have deteriorated due to the 2008’s financial crisis, which, together with an increase in olive oil prices, has prevented a considerable portion of the population to have financial conditions to access to the consumption of such an important component of the Mediterranean diet.

Details

The Cross-Disciplinary Perspectives of Management: Challenges and Opportunities
Type: Book
ISBN: 978-1-83867-249-2

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Article
Publication date: 18 March 2021

Juan A. García and Belén Ruiz

The objective of this paper is to analyse the elements that influence Spain's reputation among Chinese consumers, and to evaluate to what extent this country's reputation…

Abstract

Purpose

The objective of this paper is to analyse the elements that influence Spain's reputation among Chinese consumers, and to evaluate to what extent this country's reputation has an impact on their perceived quality of Spanish olive oil (SOO) and their intentions to purchase and recommend SOO.

Design/methodology/approach

This study was carried out by surveying 399 potential olive oil consumers in China (256 of whom were familiar with olive oil and 143 of whom had no previous familiarity with the product, although they stated their intentions to consume it). The proposed hypotheses were tested using covariance-based structural equation modelling (CB-SEM).

Findings

The results show that: (1) Spain's reputation among Chinese consumers can be principally explained by its appealing environment and advanced economy; (2) reputation does not have a direct impact on intentions to purchase and recommend SOO (summary construct effect), but rather has an indirect impact thanks to the perceived quality of SOO (halo effect), and (3) familiarity with olive oil moderates these relationships.

Originality/value

No previous study has analysed this question for this food product category (olive oil), country of origin (Spain) and target market (China). This study, therefore, provides new empirical evidence regarding the formation process of Spain's reputation among Chinese olive oil consumers and the effect of the country of origin on the Chinese olive oil market. These results provide countries' policymakers with criteria for competitive country reputation management.

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: 13 January 2021

Sara Spognardi, Domenico Vistocco, Lucio Cappelli and Patrizia Papetti

Investigate the behaviour and the habits of the consumers from central-southern Italy in relation to extra olive oil consumption, focussing on the impact of protected…

Abstract

Purpose

Investigate the behaviour and the habits of the consumers from central-southern Italy in relation to extra olive oil consumption, focussing on the impact of protected designation of origin (PDO) and EU–organic certification on purchase intention and quality perception.

Design/methodology/approach

A specific questionnaire was submitted to 160 consumers; a subsample of ten experts, ten semi-experts and ten habitual consumers of olive oil tested, through a blind test first and a normal one then, three Italian samples: an extra-virgin olive oil (EVOO) without certification, an organic EVOO and a PDO EVOO, which were characterised also from a chemical-physical point of view. The answers provided during the tastings were statistically analysed and compared.

Findings

People interviewed prefer local olive oils; they are positively influenced by PDO/organic certification, while price is not a decisive factor on the purchasing choices. According to tasting panel results: experts gave consistent answers preferring organic olive oil, semi-experts are positively influenced by the PDO brand contrary to what they claimed; non-experts would buy EVOO, although they are positively influenced by the PDO brand and negatively by the organic certification.

Practical implications

Only knowledge and experience can aid consumers make consistent and aware choices. Information campaigns could help them to distinguish products, correctly identify food attributes and overcome their scepticism towards quality of organic products.

Originality/value

Few works investigated the impact of quality and sustainability labelling on perception of olive oils, valuing the consistency between answers provided before and after sensory assessments.

Details

British Food Journal, vol. 123 no. 8
Type: Research Article
ISSN: 0007-070X

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Article
Publication date: 23 December 2020

Khaled M. M. Koriem and Mahmoud S.S. Arbid

This paper aims to evaluate hematological parameters, blood glutathione (GSH), serum glucose-6-phosphate dehydrogenase (G6-PD) and liver function in favism animals' models…

Abstract

Purpose

This paper aims to evaluate hematological parameters, blood glutathione (GSH), serum glucose-6-phosphate dehydrogenase (G6-PD) and liver function in favism animals' models after oral intake with a mixture of pickled olives and Vicia faba (V. faba) seeds.

Design/methodology/approach

Favism is a life-threatening hemolytic crisis. It results from the ingestion of V. faba by the individuals. The hemoglobin (Hb), hematocrit (Hct), red blood cells (RBCs), white blood cells (WBCs), serum glucose, blood GSH, serum G6-PD, serum thiobarbaturic acid reactive substances (TBARS), liver protein and liver function were evaluated after oral administration with a mixture of pickled olives with V. faba seeds in favism animals' models.

Findings

The favism-, vicine- and convicine-treated animals showed a significant decrease (p < 0.01) in Hb (6.42, 7.23 and 5.96 g/dl), Hct (25.4, 26.4 and 25.1%), RBCs (2.56, 2.45 and 2.60 106 cells/mm3, WBCs (4.35, 4.25 and 4.30 103 cells/mm3), serum glucose (95.8, 97.1 and 96.5 mg/dl), blood GSH (24.7, 26.6 and 23.8 mg/dl), serum G6-PD (15.8, 15.9 and 15.7 U/L), serum aspartate aminotransferase (6.35, 6.59 and 5.97 U/L), alanine aminotransferase (4.49, 4.61 and 4.50 U/L), total protein (6.54, 6.59 and 6.40 g/dl), albumin (3.84, 3.91 and 3.75 g/dl), globulin (2.70, 2.48 and 2.65 g/dl) and liver protein (3.37, 3.10 and 3.42 g/g tissue) but a significant increase (p < 0.01) in serum TBARS (38.7, 38.9 and 39.4 nmol/dl), alkaline phosphatase (275, 271 and 281 U/L) and total bilirubin (0.93, 0.89 and 0.91 mg/dl) compared to Hb (16.3 g/dl), Hct (45.3%), RBCs (5.80 106 cells/mm3), WBCs (9.45 103 cells/mm3), serum glucose (96.5 mg/dl), blood GSH (39.7 mg/dl), serum G6-PD (36.1 U/L), serum TBARS (18.0 nmol/dl), serum aspartate aminotransferase (19.8 U/L), alanine aminotransferase (9.23 U/L), alkaline phosphatase (214 U/L), total bilirubin (0.57 mg/dl), total protein (8.76 g/dl), albumin (4.85 g/dl), globulin (3.91 g/dl) and liver protein (6.28 g/g tissue) in control group. The oral administration with pickled olives + V. faba, pickled olives + vicine and pickled olives + convicine into favism animals' models, vicine-treated animals and convicine-treated animals, respectively pushed all the above-mentioned parameters to near the control levels.

Originality/value

V. faba contains vicine and convicine glycosides. Vicine and convicine glycosides in V. faba are hydrolyzed by intestinal microflora to aglycones divicine and isouramil, respectively. Divicine and isouramil are highly reactive compounds generating free radicals where divicine and isouramil are the main factors of favism. The ß-glucosidase in pickled olives converts both vicine and convicine glycosides into aglycones divicine and isouramil, respectively, in aerobic condition outside the human body (in inactive forms) and prevent these glycosides to cause favism.

Details

Nutrition & Food Science , vol. 51 no. 6
Type: Research Article
ISSN: 0034-6659

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Article
Publication date: 15 January 2020

Alberto Michele Felicetti, Antonio Palmiro Volpentesta and Salvatore Ammirato

The provision of information about food to consumers is well recognized to be problematic and complex. Novel approaches tend to adopt app-based services as a way for…

Abstract

Purpose

The provision of information about food to consumers is well recognized to be problematic and complex. Novel approaches tend to adopt app-based services as a way for consumers to get better food information. Potentially, these services could provide relevant information to consumers because they could address particular needs by leveraging on context-awareness, ubiquity and pervasiveness. Do current app-based services actualize these potentialities? The purpose of this paper is twofold: to propose a methodological approach that can be easily adapted to conduct reviews of app-based services and provide consumers with information about food and to answer this question on a specified food information domain (namely, olive oil).

Design/methodology/approach

A literature review was performed to investigate characteristics of food information services under a consumer’s value perspective. Then, a qualitative framework was built, which allowed a multidimensional analysis of the food information provided by a service through a mobile app. Moreover, an application of that framework on “olive oil” mobile apps was carried out, with the twofold objective of providing an example of application of the proposed framework in a real context and analyzing the role of mobile apps in reducing consumers’ information and knowledge gap in this particular domain. The review covers commercial applications on “olive oil,” available on the Apple App Store and Google Play Store.

Findings

A framework of multidimensional analysis of the two-way information flow in the interaction between a consumer/user and a food app-based service is proposed. The framework represents a useful tool to analyze the offer of mobile-based services in a given sector. The framework is then applied to perform a situation analysis of app-based services in the olive oil market. The analysis highlights that olive oil information providers do not seem to fully exploit recent advances in “Internet of food” technologies. Hence, results from our survey suggest some direction to conceive and develop innovative mobile olive oil apps that better exploit mobiquitous technology features.

Practical implications

Consumers perceive a growing need of information about food. This need is mainly due to recent cases of adulterations, allegations of fraud and subterfuges that have invested food sector (in particular, olive oil sector). This research provides a useful framework to analyze some aspects of management of food information provision through mobile apps. Such a framework represents a practical tool that provides fruitful insights for the design of a new generation of food-app based services within the so-called “internet of food” domain.

Originality/value

Although there are countless mobile apps aimed to assist consumers with their everyday food practices, little research has been devoted to investigate the impact of mobiquitous technologies on the management of food information provision to consumers. The available research lacks in defining an approach capable to analyze the relevance of information provided to targeted audiences by mobile food apps. This paper tries to fill this knowledge gap by proposing a framework that is based on a characterization of food information flows in terms of categorization, source and service features.

Details

VINE Journal of Information and Knowledge Management Systems, vol. 50 no. 3
Type: Research Article
ISSN: 2059-5891

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Article
Publication date: 1 May 2007

N.F. Matsatsinis, E. Grigoroudis and A.P. Samaras

This paper attempts to determine effective push‐pull marketing strategies concerning olive oil in Greece, based on the analysis of consumers' and distributors' values and…

Abstract

Purpose

This paper attempts to determine effective push‐pull marketing strategies concerning olive oil in Greece, based on the analysis of consumers' and distributors' values and the comparison of importance that each group gives to different product characteristics.

Design/methodology/approach

In this paper, multicriteria analysis is used in order to identify olive oil market segments and the factors that affect the purchase behaviour of olive oil consumers. Consumers' preferences, attitudes and perceptions with regard to special characteristics of olive oil such as quality, packaging, image, odour, colour, etc. are explored. In addition, description and analysis of the marketing channels of olive oil in Greece is presented. Finally, consumers' preferences are compared to the judgments of distributors in order to identify useful similarities‐dissimilarities in their perceptions and attitudes, concerning the attributes of the product.

Findings

The study of the olive oil market in Greece shows the importance of the product for the Greek market. Findings also suggest that the olive oil market in Greece is very complex. The qualitative analysis shows that perceived quality is the only attribute of the product that is considered very important for both consumers and distributors. In addition, perceptual maps can be a useful tool for the comparative analysis of preferences between consumers and distributors.

Originality/value

The paper identifies key factors that influence the behaviour of Greek consumers and distributors regarding olive oil purchases. These factors and the comparison between the two groups have a great influence on the marketing decisions of agricultural products and food industry in general.

Details

International Journal of Retail & Distribution Management, vol. 35 no. 5
Type: Research Article
ISSN: 0959-0552

Keywords

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