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Online ISSN:
2182-1054

Volume 13 , Issue 1, (2024)

Published:
01.05.2024.

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Vol 5, No 1 (2016)

Published: 18.04.2016.

FOREWORD

We are very pleased to deliver you another issue (the 9th  - vol 5 | issue 1) of the International Journal of Food Studiesthat includes the last two invited papers from the 3rd International ISEKI_Food Conference - ISEKI_Food 2014 - Bridging Training and Research for Industry and the Wider Community - Food Science and Technology Excellence for a Sustainable Bioeconomy.

The International Journal of Food Studies is expected to be soon indexed by Scopus. The journal is in the final phase of the evaluation process and we are now waiting for the final decision of the Content Selection & Advisory Board (CSAB).

We look forward to receive submissions of your work in the field of Food studies in Education, Research and Industry.

 

Editor-in-Chief

Cristina L.M. Silva | CBQF – Centro de Biotecnologia e Química Fina – Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto | Portugal

Authors in this issue:

Rita Pinheiro, Susanta Kumar Das, Abel E. Farroni, Adeola Bamgboje-Ayodele, Ana Sofia Rodrigues, Anthony A. Onilude, Arnout R.H. Fischer, Christianah O. Ogunmola, Claudia Domingues, Fausto Makishi , Kubrat A. Oyinlola, Leonie Ellis, Luıs Pinto de Andrade, Lynn J. Frewer, M. del Pilar Buera, Maddalena Ragona, Madhusweta Das, Manuela Vaz Velho, Marcia-Gabriela C. Kasemodel, Marian E. Raley, Mario A. Cueto, Olusimbo O. Aboaba, Oluwaseun E. Garuba, Patricia A. Curtis, Paul Turner, Roberta C. Souza, Siet J. Sijtsema, Teresa Paiva, Troy Hahn, Vishal Singh, Vivian-Lara Silva,

18.04.2016.

Original scientific paper

Developing and delivering food systems training programs for 21st century audiences

Expectations for training programmes today are very different from expectations for training programmes in the past, because today’s audiences are not only multigenerational, but the younger generations learn in distinctly different ways from older, more traditional audiences. To meet the needs of these multigenerational audiences, the Auburn University Food Systems Institute (AUFSI) has developed on-demand, online courses that offer a variety of ways for learners to interact with training materials. For example, a typical course may offer not only traditional text, but audio, video, simulations, and more. In addition, AUFSI has developed supporting educational tools such as interactive virtual tours and video games. This approach to creating courses is a response to the different levels of experiences of the generations as well as different expectations of how materials should be delivered. In order to be effective, training materials need to be designed to appeal to this multigenerational audience. Traditionalists (born before 1946) prefer face-to-face training programmes. Baby Boomers (born 1946-1964) are more accepting of technology. Generations X (born 1965-1980), Y (born 1981- 2000) and C (born after 2000), however, expect to receive training at their convenience, to have it delivered electronically, and to be entertained as well as educated.

Troy Hahn, Patricia A. Curtis

18.04.2016.

Original scientific paper

The emulsifying effect of biosurfactants produced by food spoilage organisms in Nigeria

Food spoilage organisms were isolated using standard procedures on Nutrient Agar, Cetrimide Agar and Pseudomonas Agar Base (supplemented with CFC). The samples were categorized as animal products (raw fish, egg, raw chicken, corned beef, pasteurized milk) and plant products (vegetable salad, water leaf (Talinium triangulare), boiled rice, tomatoes and pumpkin leaf (Teifairia occidentalis).They were characterised as Pseudomonas putida, Pseudomonas aeruginosa, Pseudomonas stutzeri, Burkholderia pseudomallei, Serratia rubidaea, Corynebacterium pilosum, Bacillus subtilis, Bacillus mycoides, Bacillus laterosporus, Bacillus laterosporus, Serratia marcescens, Bacillus cereus, Bacillus macerans, Alcaligenes faecalis and Alcaligenes eutrophus. Preliminary screening for biosurfactant production was done using red blood haemolysis test and confirmed by slide test, drop collapse and oil spreading assay. The biosurfactant produced was purified using acetone and the composition determined initially using Molisch’s test, thin layer chromatography and gas chromatography mass spectrometry. The components were found to be ethanol, amino acids, butoxyacetic acid, hexadecanoic acid, oleic acid, lauryl peroxide, octadecanoic acid and phthalic acid. The producing organisms grew readily on several hydrocarbons such as crude oil, diesel oil and aviation fuel when used as sole carbon sources. The purified biosurfactants produced were able to cause emulsification of kerosene (19.71-27.14%) as well as vegetable oil (16.91-28.12%) based on the emulsification index. This result suggests that the isolates can be an asset and further work can exploit their optimal potential in industries.

Christianah O. Ogunmola, Olusimbo O. Aboaba

18.04.2016.

Original scientific paper

Effects of knife edge angle and speed on peak force and specific energy when cutting vegetables of diverse texture

Cutting tool parameters such as edge-sharpness and speed of cut directly influence the shape of final samples and the required cutting force and specific energy for slicing or cutting operations. Cutting force and specific energy studies on different vegetables help to design the appropriate slicing or cutting devices. Peak cutting force and specific energy requirements for the transverse cutting of nine vegetables, differing in their textural characteristics of rind and flesh, were determined at cutting speeds of 20, 30, 40 mm min−1 and single-cut knife-edge angles of 15, 20 and 25° using a Universal Testing Machine. Low speed (20 mm min−1 ) cutting with a sharper knife-edge angle (15°) required less peak force and specific energy than that of high-speed cutting (40 mm min−1 ) with a wider knife-edge angle (25°). The vegetables with the maximum and minimum variation in the average peak cutting force were aubergine, at 79.05 (for knife speed 20 mm min−1 and edge angle 15°) to 285.1 N (40 mm min−1 and 25°), and cucumber, at 11.61 (20 mm min−1 and 15°) to 21.41 N (40 mm min−1 and 25°), respectively. High speed (40 mm min−1 ), with a large knife-edge angle (25°), required the highest force and specific energy to cut the vegetables, however, low speed (20 mm min−1 ), with a small knife-edge angle (15°), is preferred. Effects of cutting speed and knife-edge angle on peak force and specific energy responses were found significant (p<0.05). Linear or quadratic regressions gave a good fit of these variables.

Vishal Singh, Madhusweta Das, Susanta Kumar Das

18.04.2016.

Original scientific paper

Barriers to using consumer science information in food technology innovations: An exploratory study using Delphi methodology

Food technology innovation has the potential to deliver many benefits to society, although some technologies have been problematic in terms of public acceptance. In promoting the commercial success of innovative technological processes and resultant products it will be important to incorporate information relating to consumer preferences and concerns during their development. The barriers to the utilisation of consumer information during technological development was explored using a two round Delphi study involving 75 experts with an interest in new food technology (food technologists and consumer scientists). There was overall agreement that consumer information should be used in technology implementation and product design, and that good communication between key actors at pivotal stages during the development of new food technologies and products was important. However disciplinary differences were perceived to be a barrier to communication, as were difficulties associated with producing consumer information usable by food technologists. A strategy to improve inter-disciplinary communication is proposed, involving the creation of multi-disciplinary teams working together throughout the development project’s duration, including those with interdisciplinary experience. Deficiencies in the specification of the information required from consumer scientists need to be overcome. Consumer science results need to be concrete and presented as salient to and usable by food technologists.

Marian E. Raley, Maddalena Ragona, Siet J. Sijtsema, Arnout R.H. Fischer, Lynn J. Frewer

18.04.2016.

Original scientific paper

Innovation and knowledge transference in a cluster user-driven innovation perspective – the Inovcluster experience

Our purpose with this article is to show the importance of assessing trends and promoting innovation in a real business context, through a cluster ecosystem, mainly composed of micro-enterprises in the agro-industrial Portuguese sector. As many studies show, Inovcluster (which has 158 associates, from which 120 are enterprises) is also a geographic region cluster, which improves innovation performance of businesses seeking to gain competitiveness and ability to improve their exportations in the agro-industrial Portuguese sector. The role of the cluster is fundamental to creating a model for knowledge transfer of innovation capacity, interconnecting its institutional, scientific and business associates. This model has to be adapted to the sector and enterprise characteristics, relying in an interconnecting structure which is more or less decentralized according to the mentioned features. Here we present an experience and case study of the Inovcluster ecosystem and its trends and innovation transfer to business value creation, contextualized within the regional strategy for smart specialization. We have shown how, through the establishment of an Inovcluster network, it is possible to integrate the contribution of different research and academic centres, channelled to assist micro-enterprises by innovating within a geographical constraint.

Teresa Paiva, Claudia Domingues, Luıs Pinto de Andrade

18.04.2016.

Original scientific paper

Towards the development of a common starter culture for fufu and usi (edible starch): Screening for potential starters

Fermented cassava products like fufu and usi are important staple foods in many African homes. Natural fermentation time is usually long resulting in slower acidification and inconsistent nutritional composition of products which could be overcome with the use of starter culture. However, most available starters are used for single food fermentation and are uneconomical. This necessitates the development of a starter culture for multiple related food products to reduce cost. Hence, this study aimed at screening for potential starters in the development of a common starter culture for fufu and usi. Fresh, peeled, chipped and grated cassava tubers were spontaneously fermented and lactic acid bacteria were isolated from the fermenting mash at 24 hour intervals. Ninety eight (98) isolates were randomly picked. Lactobacillus plantarum had highest occurrence (50.0%) in both fermentations. All selected isolates did not hydrolyze starch, but produced linamarase and pectinase. Fermenting pH ranged between 6.50 and 3.58 during 72 hours fermentation. Lactic acid concentration ranged from
1.10 g/L to 1.78 g/L at 24 hours, 1.22 g/L to 2.45 g/L at 48 hours and 0.57 g/L to 2.55 g/l at 72 hours. The highest hydrogen peroxide concentration produced was 629 µg/L at 24 hours while the least was 136 µg/L at 72 hours. 1.08 g/L of diacetyl was the least concentration produced at 24 hours while the highest was 2.86 g/L at 48 hours. Five potential starters were identified as Lactobacillus pentosus F2A, L. plantarum subsp. argentolarensis F2B, L. plantarum F2C, L. plantarum U2A and L. paraplantarum U2C.

Kubrat A. Oyinlola, Anthony A. Onilude, Oluwaseun E. Garuba

18.04.2016.

Original scientific paper

Following the trail of crumbs: A bibliometric study on consumer behavior in the Food Science and Technology field

The main goal of this paper was to conduct an exploratory study regarding consumer preference in the field of Food Science and Technology. Two questions guided this study: Is it possible to identify a trail of crumbs concerning consumer behavior in the Food Science and Technology field? And, if that trail exists, where is it leading academia in terms of research trends of interest? A bibliometric study was conducted using an analysis software called CiteSpace. The use of this methodology ensured the impartiality of the literature review of the topic of interest. A survey of all articles indexed in Web of Science between 1993 and 2013 regarding consumer behaviour was carried out. In total, 1,786 articles were analyzed. The recent increased concern regarding consumer behavior was evident. With the USA and Spain having a significant role in driving the trail. Eight other countries that exhibited similar influences are: Italy, England, Australia, Germany, Denmark, France, Netherlands and Brazil. The research trends observed were grouped into seven major hot topics: sensory, health, safety, willingness to pay, packaging, ethics, and lifestyle/convenience. However, the development of publishing trends depended on where the research was carried out. A final suggestive finding, demonstrated that scientific knowledge does not occur in a vacuum.

Marcia-Gabriela C. Kasemodel, Fausto Makishi, Roberta C. Souza, Vivian-Lara Silva

18.04.2016.

Original scientific paper

A food recall case study in Australia – Towards the development of food safety applications for consumers

Changes in consumer attitudes, behaviours and purchasing preferences towards different types of food highlight the increased demand for better quality information on safety, quality and provenance of food products and on sustainability of food production processes. These changes offer both new opportunities and risks for food producers who require mechanisms to better understand and respond to changing consumers’ decision-making trends on food. In the area of food safety, investigation of consumer and producer responses during recall incidents provide an opportunity to holistically understand existing information flows and elicit user requirements necessary for the development of more effective consumer food safety applications. This paper reports on a case study conducted with an Australian premium manufacturing company that experienced a food recall in 2014. The investigation confirms that current Australian food recall response mechanisms do not guarantee a closed loop of communication with all purchasers of a recalled product. It also highlights that producers still face difficulties in understanding how best to effectively understand and respond to different types of consumers. It emerges that recovery from a food incident relies on many factors including pre-existing brand reputation, effective information management, control mechanisms and supply chain partner response. From a consumer perspective, it is evident that consumers’ responses are influenced by various factors that require sensitivity around the choice of information modality and information platform adopted to enhance communications during food recall. The paper highlights the need for further research into understanding consumer food safety behaviours post-purchase to improve the development of consumer food safety applications.

Adeola Bamgboje-Ayodele, Leonie Ellis, Paul Turner

18.04.2016.

Original scientific paper

Pronase hydrolysis as a pretreatment for quantifying Maillard intermediates during toasting of cornflakes

Some of the products generated by the Maillard reaction are desired and very important for defining consumer acceptance of breakfast cereals. However, in recent years there has been an increased concern about compounds that are potentially harmful such as furfurals. The aim of this work was to analyze the effectiveness of protein hydrolysis with pronase as a pretreament for the evaluation of furfurals generated by the Maillard reaction during toasting of cornflakes and the parallel development of brown and fluorescent compounds. Furfurals were more accurately quantified with the pronase hydrolysis pretreatment because the protein matrix binds furfurals and fluorescent compounds. For control of the early reaction steps in the toasting process, the most sensitive parameter was fluorescence.

Mario A. Cueto, Abel E. Farroni, M. del Pilar Buera

16.04.2016.

Original scientific paper

The Atlantic diet – Origin and features

Despite globalization there still are food patterns which are clearly differentiated from one region to another in Europe and elsewhere. In this study the Atlantic Diet is considered as the traditional diet in Portugal and Galicia, a region in northwest Spain. This paper aims to contribute to a better understanding of the Atlantic Diet food pattern in order to fully exploit the potential of this Atlantic gastronomical heritage. The background of the Atlantic Diet concept, the characterization of Atlantic Diet foods and a compilation of scientific findings related to the consumption of these foods are covered. A brief description of the Mediterranean Diet, the primitive pattern and the updated Mediterranean pyramid are also included in order to aid understanding of the globalization of this previously local health food pattern.
Final remarks and suggestions for further studies are made. 

Manuela Vaz Velho, Rita Pinheiro, Ana Sofia Rodrigues

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