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Article
Publication date: 15 March 2019

Sarra Dali, Djamil Krouf, Zoheir Mellouk and Nawal Taleb-Dida

This paper aims to study the effects of a diet supplemented with flaxseeds on dyslipidemia, oxidative stress and proinflammatory cytokines, in rats consuming a high-cholesterol…

Abstract

Purpose

This paper aims to study the effects of a diet supplemented with flaxseeds on dyslipidemia, oxidative stress and proinflammatory cytokines, in rats consuming a high-cholesterol diet.

Design/methodology/approach

Male Wistar rats (n = 30) weighing (250 ± 5 g) of which 10 were control and 20 were rendered hypercholesterolemic (HC) by feeding a diet enriched with 1% of cholesterol, for 15 days. After this phase, rats were divided into two groups; hypercholesterolemic group (HC) (n = 10), fed 20% casein diet enriched with 1% cholesterol; and hypercholesterolemic rats fed the same diet (n = 10), but additionally supplemented with flaxseeds (Linum usitatissimum) (Lu) powder, i.e. HC-Lu. Animals of the control group (n = 10) were fed the casein diet. All the animals were maintained on the respective diets for four weeks.

Findings

This study showed that in HC-Lu as compared to HC group, plasma total cholesterol, triacylglycerols and non-HDL cholesterol concentrations were respectively 2.4-, 1.5- and 3-fold lower. Also, the lipid peroxidation was reduced in red blood cells, organs (liver, heart and aorta) and lipoproteins (HDL2, HDL3 and VDL-LDL). A higher superoxide dismutase activity was observed in liver (+61%), heart (+62%) and aorta (+59%), whereas plasma proinflammatory cytokine (IL-1beta and IL-6) levels were decreased.

Originality/value

These results suggest that flaxseeds help to reduce hypercholesterolemia, oxidative stress and inflammation in patients with hypercholesterolemia.

Details

Nutrition & Food Science, vol. 49 no. 4
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 12 March 2018

Neetu Miglani, Kiran Bains and Simranpreet Kaur Bhathal

The study aims to design metabolic syndrome (MetS) ingredient mix with optimum amino acid makeup using key foods with reported functional properties and study the efficacy of this…

Abstract

Purpose

The study aims to design metabolic syndrome (MetS) ingredient mix with optimum amino acid makeup using key foods with reported functional properties and study the efficacy of this mix to alleviate the symptoms of MetS among adult men and women with MetS.

Design/methodology/approach

In total, 25 MetS-specific ingredient mixes that included wheat flour, common legumes, fenugreek and flaxseeds were formulated by correcting their amino acid score. The suitability of these mixes was tested for the preparation of chapati (an unleavened Indian bread). Owing to its highest lysine content, the ingredient mix of whole wheat flour, oat flour, soybean, flaxseeds and fenugreek seeds was selected for the 12-week supplementation trial among patients with MetS.

Findings

The sensory scores of chapatis made using nine ingredient mixes was comparable with those of chapati made from whole wheat flour (control). The test chapatis had a significantly (p = 0.05) higher protein, ash, fibre and fat content, and lysine was also higher (591-1,006 mg/100 g) than the control chapatis (314 mg). Positive and significant changes in the anthropometry, body composition, fasting blood glucose levels, blood pressure and lipid profile of the patients with MS was seen after consumption of the selected ingredient mix.

Originality/value

Keeping in view the traditional vegetarian Indian meals which usually take care of including foods from different sources to improve their protein quality, the concern for providing protein quality to prevent metabolic abnormalities is significant for a large lacto-vegetarian population in India which depends on plant foods for obtaining essential amino acids. Obtaining optimum protein quality from meals along with maintaining a physically active lifestyle may help people have the appropriate fat to lean mass proportion which may have a protective role against MetS.

Details

Nutrition & Food Science, vol. 48 no. 2
Type: Research Article
ISSN: 0034-6659

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: 29 October 2019

Sadia Berzou, Djamil Krouf, Nawal Taleb-Dida and Akila Guenzet

The purpose of this study is to evaluate the effects of flaxseed (L. usitatissimum [Linn]) on blood pressure, redox status markers and acetylcholinesterase enzyme activity in…

Abstract

Purpose

The purpose of this study is to evaluate the effects of flaxseed (L. usitatissimum [Linn]) on blood pressure, redox status markers and acetylcholinesterase enzyme activity in ouabain-induced hypertension in normal Wistar rats.

Design/methodology/approach

Male Wistar rats weighing 250 ± 7 g (n = 24) fed with an experimental diet containing 20 per cent casein were divided into three groups (n = 8) and received a daily subcutaneous injection of either 0.9 per cent saline solution (T group) or 10 µg/kg/day of ouabain diluted in saline solution-treated Oub-Lu or not with 1 per cent of flaxseed (L. usitatissimum) mixed in the diet for 21 days.

Findings

The results showed that treatment with flaxseed had a significant effect (p < 0.05) in decreasing systolic, diastolic blood pressure, mean arterial pressure and the heart rate in hypertensive rats. Total and non-HDL cholesterol levels were reduced by –26 and –35 per cent; p = 0.04, respectively. Concentrations of thiobarbituric acid-reactive substances were significantly decreased by –85 and –42 per cent (p = 0.001 and p = 0.04), respectively in the plasma and heart. Nitric oxide levels were increased in the aorta (+ 63 per cent; p = 0.001). Moreover, in the heart and aorta, a significant increase was noted in the thiol contents (+81 and +69 per cent; p = 0.001, respectively), glutathione peroxidase (+50 per cent; p = 0.03 and p = 0.01, respectively) and acetylcholinesterase activities (75 and +19 per cent, respectively; p = 0.001 and p = 0.04).

Originality/value

These results suggest hypotensive, cardiomoderating and antioxidant effects of flaxseed in ouabain-induced hypertension in the rat. In addition, it promotes a significant increase of the acetylcholinesterase activity in tissues.

Details

Nutrition & Food Science , vol. 50 no. 4
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 3 October 2016

Nikolina Cukelj, Predrag Putnik, Dubravka Novotni, Saša Ajredini, Bojana Voucko and Duška Curic

Cookies were not generally viewed as functional contributors to well-being as they are primarily perceived as confectionery products. The purpose of this paper is to evaluate the…

Abstract

Purpose

Cookies were not generally viewed as functional contributors to well-being as they are primarily perceived as confectionery products. The purpose of this paper is to evaluate the potential of flaxseed-enriched cookies as carriers of lignans and omega-3 fatty acids – functional compounds that are lacking in the western diet.

Design/methodology/approach

An online questionnaire collected data from Croatian consumers (n=1,035). The majority of the samples were women (73 per cent) in the age range 15-65 years (97 per cent). Most participants were employed, had a higher education degree, and lived in urban areas. Questions examined the consumption of cookies and flaxseed, interest for functional cookies, nutritional knowledge, and awareness.

Findings

Majority of subjects consumed cookies (93 per cent), while 61 per cent did not eat flaxseed or ate it less than once a month. The consumers showed elevated interest for the functional cookies with flaxseed, among which elderly women with higher nutrition awareness, and nutrition knowledge were the most interested. Functional cookies with flaxseed could be used for delivery of lignans and omega-3 fatty acids in everyday diet, but in order to reach wider range of consumers producers might benefit from employing nutritional educational marketing campaigns.

Originality/value

Data from the study decreased scarcity of information on consumer behaviour related to flaxseed consumption and on potential use of cookies as a functional food. Reported findings will be useful to dieticians, food industry, and food researchers in countries with a high prevalence of cookie consumption.

Details

British Food Journal, vol. 118 no. 10
Type: Research Article
ISSN: 0007-070X

Keywords

Content available
Article
Publication date: 18 May 2012

591

Abstract

Details

Nutrition & Food Science, vol. 42 no. 3
Type: Research Article
ISSN: 0034-6659

Article
Publication date: 13 March 2017

Alexander Y. Yashin, Dmitry V. Yashunsky, Aleksander N. Vedenin, Nikolay E. Nifantiev, Yakov I. Yashin and Boris V. Nemzer

The purpose of this paper is to determine the antioxidant activity of natural polyphenols from larch wood by the amperometric method.

Abstract

Purpose

The purpose of this paper is to determine the antioxidant activity of natural polyphenols from larch wood by the amperometric method.

Design/methodology/approach

Direct measurements of antioxidant activity were carried out by the amperometric method in an oxidizing mode with glassy carbon as a working electrode, set potential +1.3V and using a flow-injection system with 2.2 mM phosphoric acid as the mobile phase with a flow rate of 1.2 ml/min.

Findings

The reported results show the following values of antioxidant activity for the tested compounds: (−)-secoisolariciresinol – 0.199 ± 0.002 mg/L (p < 0.05); isolariciresinol – 0.196 ± 0.002 mg/L (p < 0.05); lariciresinol - 0.222 ± 0.001 mg/L (p < 0.05); O-isopropylidene derivative of (−)-secoisolariciresinol - 0.143 ± 0.002 mg/L (p < 0.05); (+)-dihydroquercetin – 0.153 ± 0.002 mg/L (p < 0.05); and quercetin – 0.521 ± 0.001 mg/L (p < 0.05). The last product was tested as the reference of a widely used current antioxidant. General tendencies of determined values of antioxidant activity for studied compounds are in good correlation with published data as determined by the t-BuOOH-initiated lipid peroxidation method.

Practical implications

Described results show practical applicability of the amperometric method as being faster and cheaper in comparison to other methods, including oxygen radical absorbance capacity (ORAC) assay or 2,2′diphenyl-1-picrylhydrazyl (DPPH) reagent based assay.

Originality/value

The described results show the first-time application of the amperometric method for the evaluation of the antioxidant activity of phenolic compounds from larch wood.

Details

Nutrition & Food Science, vol. 47 no. 2
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 13 February 2024

Nagla Elshemy, Mona Ali and Reem Nofal

The purpose of this study is to successfully apply ultrasonic waves for the quick extraction of flax seed gum from flaxseed hull or whole seed and compare it to the standard…

29

Abstract

Purpose

The purpose of this study is to successfully apply ultrasonic waves for the quick extraction of flax seed gum from flaxseed hull or whole seed and compare it to the standard technique of extraction.

Design/methodology/approach

The effect of the heating source, extracted time, temperature and pH of extracted solution on the extraction was studied. The obtained gum is subsequently used for silk screen printing on cotton, linen and viscous fabrics. Rheological properties and viscosity of the printing paste were scrutinized in the current study to get a better insight into this important polysaccharide. The output of this effort aimed to specify the parameters of the processes for printing textiles to serve in women’s fashion clothes by applying innovated handmade combinations of Islamic art motives using a quick and affordable method. Seven designs are executed, and inspiring from them, seven fashion designs of ladies’ clothes were designed virtually by Clo 3D software.

Findings

The result recorded that the new gum has excellent printing properties. In addition, they have better rheological properties, viscosity, chromatic strength and fastness qualities, all of which could help them in commercial production.

Research limitations/implications

Flaxseed and three different fabric types (Cotton, Linen and Viscous) were used.

Practical implications

Synthesis of a new biodegradable thickener from a natural resource, namely, flaxseed, by applying new technology to save time, water and energy.

Originality/value

Synthesis of eco-friendly biodegradable thickener and used in textile printing alternative to the synthetic thickener.

Details

Research Journal of Textile and Apparel, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1560-6074

Keywords

Article
Publication date: 23 November 2020

Somaye Fatahi, Fahime Haghighatdoost, Bagher Larijani, Pamela J. Surkan and Leila Azadbakht

Recent research has suggested the beneficial effects of omega-3 fatty acids on kidney function; however, differences in these benefits have not been well-documented with respect…

Abstract

Purpose

Recent research has suggested the beneficial effects of omega-3 fatty acids on kidney function; however, differences in these benefits have not been well-documented with respect to different omega-3 fatty acid sources. Hence, the purpose of this study is to compare the effects of plants, marine sources of omega-3 fatty acids and their combination on biomarkers of renal function in overweight and obese individuals.

Design/methodology/approach

Ninety-nine overweight and obese women from a weight loss clinic received three weight-reducing diets with fish (300 g/week), walnuts (18 walnuts/week) or fish + walnuts (150 g fish + 9 walnuts/week) for 12 weeks. Serum biomarkers of renal function were measured at the beginning and the end of the intervention.

Findings

After 12 weeks, a reduction in serum creatinine was statistically higher for both the fish + walnut (−0.16 ± 0.09 mg/dL, p = 0.001) and walnut (−0.15 ± 0.05 mg/dL, p = 0.001) diets compared with the fish diet (−0.05 ± 0.04 mg/dL). A significant decrease was seen in blood urea nitrogen (BUN) level in the fish + walnut group (−0.12 ± 0.05 mg/dL, p = 0.03) and walnut group (−0.10 ± 0.04 mg/dL, p = 0.03) compared to the fish group (−0.05 ± 0.03 mg/dL). The effect of serum creatinine and BUN in the fish + walnut diet group was relatively higher than in the walnut diet group. Also, a significant difference was observed regarding weight loss in the fish + walnut diet (−7.2 ± 0.9 kg, p = 0.03) compared to in the other groups. The change in other indices was not different among the three diets.

Originality/value

This study found synergistic benefits of the plant and marine omega-3 fatty acids in reducing serum creatinine, BUN and weight compared with isolated marine omega-3s in overweight and obese women.

Details

Nutrition & Food Science , vol. 51 no. 5
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 26 June 2009

Jeffery Houghton, Christopher Neck and Kenneth Cooper

The purpose of this paper is to suggest that nutritious food intake is a somewhat overlooked yet essential aspect of corporate wellness that has the potential to help provide…

1391

Abstract

Purpose

The purpose of this paper is to suggest that nutritious food intake is a somewhat overlooked yet essential aspect of corporate wellness that has the potential to help provide organizations with a sustainable competitive advantage.

Design/methodology/approach

The paper first discusses the resource‐based view, identifying ways in which nutritious food intake across an organization may serve to create rare and inimitable organizational resources leading to a competitive advantage. It then presents a basic overview of the fundamentals of nutritious food intake. It proceeds to review the transtheoretical stages of change model in the context of tailored nutrition interventions in organizations, providing a detailed overview of key individual behavior focused and environmental focused change strategies along with a discussion of types of technical delivery systems.

Findings

The paper suggests that an organization may be able to use a tailored stage‐based nutrition intervention as part of a comprehensive wellness program in order to help create a sustainable competitive advantage based on the nutritious food intake of its members.

Research limitations/implications

Future researchers should continue to examine the effectiveness of stage‐based computer tailored nutrition interventions and their delivery systems, particularly in the context of comprehensive corporate wellness plans and the extent to which this serves to create a competitive advantage through lower direct healthcare costs and higher worker productivity.

Practical implications

Organizational leaders should carefully consider the strategies and methodologies presented in this paper when designing and implementing nutrition interventions as part of a broad corporate wellness program.

Originality/value

This paper makes a valuable contribution to the organizational literature by recognizing the potential for the application of the transtheoretical stages of change model from the field of nutrition education within the context of the resource‐based view of organizations.

Details

International Journal of Workplace Health Management, vol. 2 no. 2
Type: Research Article
ISSN: 1753-8351

Keywords

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