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1 – 10 of 431
Article
Publication date: 26 September 2009

Christine Hoefkens, Wim Verbeke, Joris Aertsens, Koen Mondelaers and John Van Camp

The present study aims to explore and compare consumer perception and scientific evidence related to food quality and food safety aspects of organic versus conventional vegetables.

3774

Abstract

Purpose

The present study aims to explore and compare consumer perception and scientific evidence related to food quality and food safety aspects of organic versus conventional vegetables.

Design/methodology/approach

Primary data on consumer perception were gathered in 2006‐2007 through a consumer survey with Flemish adults (n=529) and compared with scientific evidence from literature. Consumers of organic and conventional vegetables were selected by means of a convenience sampling procedure. Subjects were asked to complete a self‐administered questionnaire concerning the perception of the nutritional and toxicological value of organic relative to conventional vegetables. Data processing and analysis included descriptive analysis (frequency distributions), data reduction (Cronbach's alpha test, factor analysis), bivariate analysis (correlations, t‐test, ANOVA) and multivariate analysis (stepwise multiple regression).

Findings

It was found that organic vegetables are perceived as containing less contaminants and more nutrients, and as such, being healthier and safer compared to conventional vegetables. However, not enough evidence is currently available in the literature to support or refute such a perception, indicating a certain mismatch between consumer perception and scientific evidence. The gap between perception and evidence is larger among older consumers with children. The perception is stronger when the consumption frequency is higher, but is independent of gender, place of residence (rural or urban), education and income level. Also non‐users, on average, perceive that organic vegetables have a nutritional and toxicological advantage over conventional vegetables.

Research limitations/implications

A non‐probability convenience sampling method was applied which limits generalisation of the findings beyond the sample characteristics.

Originality/value

This paper is original in comparing consumer perception and scientific facts related to both nutritional and safety aspects of organic versus conventional vegetables.

Details

British Food Journal, vol. 111 no. 10
Type: Research Article
ISSN: 0007-070X

Keywords

Article
Publication date: 1 January 1993

Mervyn Richardson, I.M. Trakhtenberg and M.N. Korshun

Summarizes some of the most relevant toxicological aspects from theUNEP/IRPTC′s Scientific Reviews of Soviet Literature on Toxicity andHazards of Chemicals, No. 117 Organomercury…

Abstract

Summarizes some of the most relevant toxicological aspects from the UNEP/IRPTC′s Scientific Reviews of Soviet Literature on Toxicity and Hazards of Chemicals, No. 117 Organomercury compounds, Geneva/Moscow 1990, and outlines their uses and environmental fate and pathways in a number of species and matrices. Of special interest are the toxic effects during pregnancy and to nursing mothers and their offsprings. Effects upon farm animals, foodstuffs, building facrics are indicated, together with recommendations for their prohibition. Their persistence in the environment is stressed.

Details

Environmental Management and Health, vol. 4 no. 1
Type: Research Article
ISSN: 0956-6163

Keywords

Article
Publication date: 26 September 2009

Christine Hoefkens, Isabelle Vandekinderen, Bruno De Meulenaer, Frank Devlieghere, Katleen Baert, Isabelle Sioen, Stefaan De Henauw, Wim Verbeke and John Van Camp

The increasing demand for organic foods is explained mainly by consumers' concerns about the quality and safety of foods and their perception that organically produced foods are…

2505

Abstract

Purpose

The increasing demand for organic foods is explained mainly by consumers' concerns about the quality and safety of foods and their perception that organically produced foods are healthier and safer than conventional foods. Based on internationally available concentration data of organic and conventional vegetables (carrots, tomatoes, lettuce and spinach) and potatoes, the paper aims to investigate the scientific validity of nutrition claims as “no vegetable/potato has higher amounts of nutrient X than organic vegetables/potatoes” and “no vegetable/potato has lower amounts of contaminant Y than organic vegetables/potatoes”.

Design/methodology/approach

Detailed nutrient and contaminant databases were developed for organic and conventional vegetables separately. Non‐parametric (Mann‐Whitney test) methods were used to detect significant differences between both types of vegetables. A chi‐square test was used to compare the incidence of pesticide residues in organic and conventional vegetables.

Findings

From a nutritional and toxicological point of view, organic vegetables and potato in general are not significantly better than conventional vegetables and potatoes. For some nutrients and contaminants organic vegetables and potatoes score significantly better but for others they score significantly worse. Therefore, it becomes difficult to justify general claims indicating a surplus value of organic over conventional vegetables and potatoes. More data from controlled paired studies are needed to reconsider the use of claims for these organic plant foods in the future.

Research limitations/implications

Only a limited number of studies comparing the nutrient and/or contaminant concentration of organic and conventional vegetables are available (“paired studies”). Additionally, the majority of the studies are of moderate or poor quality. The implication is that more of those paired studies are heavily needed. Another limitation of the study is the fact that most pesticide residue data originated from the USA, the EU and Australia.

Originality/value

So far only few studies compared both nutrient and contaminant contents between organic and conventional plant foods. This paper covers therefore an important, not well‐explored research sub area.

Details

British Food Journal, vol. 111 no. 10
Type: Research Article
ISSN: 0007-070X

Keywords

Article
Publication date: 11 May 2022

Simran Gogna, Jaspreet Kaur, Kartik Sharma, Vishesh Bhadariya, Jyoti Singh, Vikas Kumar, Prasad Rasane and Vipasha Vipasha

The purpose of this paper is to highlight the health benefits, functional role of alpha linolenic acid (ALA) in combating diet-related non-communicable diseases, absorption…

Abstract

Purpose

The purpose of this paper is to highlight the health benefits, functional role of alpha linolenic acid (ALA) in combating diet-related non-communicable diseases, absorption, metabolism, toxicity and extraction of ALA.

Design/methodology/approach

A wide range of publications were identified through electronic databases (Google Scholar, PubMed, SciELO, ScienceDirect, SpringerLink and ResearchGate) on the basis of different keywords such as dietary sources, functional role, metabolism, beneficial effects, toxicity and extraction.

Findings

ALA, an omega-3 fatty acid, is commonly found in dietary sources such as flaxseeds, rapeseed, pumpkin seeds, walnuts and fatty fish, with flaxseed being the richest among all the sources. Several convincing evidences depict the functional role of ALA in ameliorating cardiovascular functions, regulating systolic and diastolic blood pressure and improving neurological disorders, thus possessing anti-arrhythmic as well as anti-inflammatory properties. Its promising effect is also noticed on post-menopausal symptoms like hot flashes, insomnia and headache as well as in balancing the levels of sex hormones in women suffering from PCOS. Furthermore, it was also responsible for reducing the concentrations of C-reactive protein and interleukin-6. Its excess consumption may lead to gastrointestinal disturbances such as flatulence and bloating. Various extraction techniques, namely, medium pressure liquid chromatography, silver silica gel chromatography, silver ion-solid phase extraction and silver ion-high pressure liquid chromatography are used for the extraction of ALA from its sources.

Originality/value

This is a novel review which will provide a brief overview of dietary sources, functional role, absorption and metabolism, health benefits, toxicity and extraction of ALA.

Article
Publication date: 26 October 2018

Laurene Boateng, Eunice Nortey, Agartha N. Ohemeng, Matilda Asante and Matilda Steiner-Asiedu

Inadequacies in several micronutrients in complementary foods, notably iron, zinc, calcium, vitamin A, vitamin B6 and riboflavin have been reported. Moringa oleifera leaf powder…

Abstract

Purpose

Inadequacies in several micronutrients in complementary foods, notably iron, zinc, calcium, vitamin A, vitamin B6 and riboflavin have been reported. Moringa oleifera leaf powder (MLP), prepared from dried moringa leaves is nutrient-rich and has been explored for the treatment of micronutrient deficiencies among children in developing countries. This increasing interest in the use of moringa oleifera leaves to improve complementary foods notwithstanding, the unique sensory characteristics of the leaf powder potentially holds implications for the acceptability of local diets that are fortified with it. The purpose of this paper is to investigate the levels of MLP fortification that are most acceptable for feeding infants and young children.

Design/methodology/approach

The authors performed a review of the literature, with the aim of investigating the sensory attributes and acceptable levels of fortification of complementary food blends fortified with different levels of MLP.

Findings

The minimum amount of MLP to be added to a complementary food blend to observe significant improvements in its nutritional value was estimated to be about 10 per cent. However, at this 10 per cent fortification level also, sensory attributes of the products begin to become less desirable.

Practical implications

For the success of nutrition interventions that involve the use of MLP to improve the nutritional quality of complementary foods, there is a need to consider the acceptability of the sensory attributes of the formulated blends in the target group. Safety of MLP as an ingredient in infant foods must also be investigated.

Originality/value

The authors of this paper make recommendations for the use of MLP to fortify complementary foods to ensure its success as a food fortificant in nutrition interventions. The researchers are not aware of any published study that focuses on this subject.

Details

Nutrition & Food Science, vol. 49 no. 3
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 1 May 1974

The growing range of EEC Directives and Regulations for food products, some of which have never been subject to statutory control in this country, with compositional standards…

Abstract

The growing range of EEC Directives and Regulations for food products, some of which have never been subject to statutory control in this country, with compositional standards, and in particular, prescribed methods of analysis — something which has not featured in the food legislative policies here — must be causing enforcement authorities and food processors to think seriously, if as yet not furiously. Some of the prescribed methods of analysis are likely to be less adaptable to modern processing methods of foods and as Directives seem to be requiring more routine testing, there is the matter of cost. Directive requirements are to some extent negotiable — the EEC Commission allow for regional differences, e.g., in milk and bread — but it has to be remembered that EEC Regulations bind Member‐states from the date of notification by the Commission, over‐riding the national law. Although not so frequently used for food legislation, they constitute one of the losses of sovereign power, paraded by the anti‐market lobby. Regulations contain usual clauses that they “shall enter into force on the day following publication in the Official Journal of the European Communities” and that they “shall be binding in their entirety and directly applicable in all Member States”.

Details

British Food Journal, vol. 76 no. 5
Type: Research Article
ISSN: 0007-070X

Article
Publication date: 1 January 1975

In these days of jargon and slang, to the purist it must seem that little is described by its real name, that is, during conversation. Most people refer to the city as “the smoke”…

Abstract

In these days of jargon and slang, to the purist it must seem that little is described by its real name, that is, during conversation. Most people refer to the city as “the smoke” and the city‐dweller's pseudonym for the country is “out in the sticks”, which, of course, could mean that “the sticks” are kindling to a fire that has not been lit, with the city “smoke” as the end‐product of the fire that is burning up those who rush hither and thither in its bedlamite streets and ugly office blocks. The cottage, the church and inn no longer completely fill the lives of the villagers; they now have piped water supplies, electricity and telephones; deep freezers, colour television and cars; they have moved closer to the city standards of comfort and convenience without losing any of the enduring qualities which make them different. And the countryman is very different to the town‐dweller—in outlook, habit and countenance. Even the villager who works in the town and city, and nowadays there are many of them, would not change his home in the country for a flat or terrace house in a mean street, despite the long journeying to and fro. At one time, it had to be a special type of girl who chose a home in these rural settings, with few or perhaps no neighbours and no corner‐shop, but now more and more are realizing that life in a village is easier on the whole family.

Details

British Food Journal, vol. 77 no. 1
Type: Research Article
ISSN: 0007-070X

Article
Publication date: 1 March 1991

Belinda K. Howell

Polyvinyl chloride (PVC) in its many forms accounts for a largeproportion of plastics production and packaging in Western Europe. Itsapplications and fitness for purpose as a food…

Abstract

Polyvinyl chloride (PVC) in its many forms accounts for a large proportion of plastics production and packaging in Western Europe. Its applications and fitness for purpose as a food packaging are outlined, together with an analysis of the energy and materials required and by‐products made in its production. Methods of production are outlined, noting the environmental and health hazards. Problems associated with its disposal are described.

Details

British Food Journal, vol. 93 no. 3
Type: Research Article
ISSN: 0007-070X

Keywords

Article
Publication date: 1 March 1993

Shipley Europe have appointed Alex Kostelecky as Group Sales Director for their range of specialist chemicals and processes for the printed circuit board industry.

Abstract

Shipley Europe have appointed Alex Kostelecky as Group Sales Director for their range of specialist chemicals and processes for the printed circuit board industry.

Details

Circuit World, vol. 19 no. 4
Type: Research Article
ISSN: 0305-6120

Article
Publication date: 1 May 1981

Christine Lewis

The Royal Society of Health has a unique function in providing a meeting place for professional people of many different disciplines: dental and allied professions, environmental…

Abstract

The Royal Society of Health has a unique function in providing a meeting place for professional people of many different disciplines: dental and allied professions, environmental planning and building, food and nutrition, health education, medical supplementary professions, mental health, nursing services and social services. Recently there was an unusual blending of disciplines when the Food and Nutrition Group met together with the Pharmaceutical Group for a lecture by Dr H.J. Rogers, Consultant and Senior Lecturer in Clinical Pharmacology, Guy's Hospital, London. Christine Lewis attended this lecture to be introduced to the world of pharmacokinetics and pharmacodynamics, the language of pharmacy.

Details

Nutrition & Food Science, vol. 81 no. 5
Type: Research Article
ISSN: 0034-6659

1 – 10 of 431