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1 – 7 of 7Nour el Imane Harrat, Sabrine Louala, Fatima Bensalah, Fouad Affane, Hadjera Chekkal and Myriem Lamri-Senhadji
The purpose of this study was to investigate the effects of prickly pear (Opuntia ficus indica (OFI)) nopalitos on body weight, food consumption, arterial blood pressure, glucidic…
Abstract
Purpose
The purpose of this study was to investigate the effects of prickly pear (Opuntia ficus indica (OFI)) nopalitos on body weight, food consumption, arterial blood pressure, glucidic homeostasis, cholesterol metabolic pathway and tissues redox status in type 2 diabetic (T2D) rats fed a high-fat diet (HFD).
Design/methodology/approach
Rats were fed by a HFD containing 30 per cent sheep fat for 10 weeks, after which they were rendered diabetic by an injection of a low dose of streptozotocin (STZ) (35 mg/kg). The diabetic rats were then divided into two groups. The first group consumed the HFD supplemented with 5 per cent (g/100 g diet) of freeze-dried OFI nopalitos (HFD-OFI), and the second group received the HFD without supplementation (HFD).
Findings
OFI nopalitos treatment decreased significantly arterial diastolic (−20%; p = 0.0001) and systolic (−16%; p = 0.0001) pressures, glycemia (−14%; p = 0.03), insulinemia (−50%; p = 0.04), glycated hemoglobin (−49%; p = 0.003), homeostasis model assessment insulin resistance (−67%; p = 0.03), cholesterolemia (−31%; p = 0.003), very-low and low-density lipoprotein cholesterol (−38%; p = 0.002 and −63% p = 0.0002, respectively); thiobarbituric acid reactive substances and lipid hydroperoxide contents, respectively, in liver (−26% p = 0.02, −20% p = 0.02), adipose tissue (−30% p = 0.002, −25% p = 0.001), muscle (−29% p = 0.003, −25% p = 0.008) and kidney (lipid hydroperoxides only (−28%; p = 0.001) but increased high-density lipoprotein (HDL2) cholesteryl esters (+61%; p = 0.0001), serum lecithin: cholesterol acyltransferase activity (+21%; p = 0.006) and antioxidant enzymes activities (superoxide dismutase, glutathione peroxidase and catalase) of some tissues (liver, adipose tissue, muscle and kidney).
Originality/value
Freeze-dried OFI nopalitos improves arterial blood pressure, glycemic control, metabolic pathway of cholesterol and redox status in T2D rats.
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Hadjera Chekkal, Nour el Imane Harrat, Fatima Bensalah, Fouad Affane, Sabrine Louala and Myriem Lamri-Senhadji
The effects of Opuntia ficus indica (OFI) cladodes on uricemia level, endothelial dysfunction and oxidative damage were studied in young rats fed a cafeteria diet (CD).
Abstract
Purpose
The effects of Opuntia ficus indica (OFI) cladodes on uricemia level, endothelial dysfunction and oxidative damage were studied in young rats fed a cafeteria diet (CD).
Design/methodology/approach
A total of 16 young male Wistar rats (weighing 110 ± 20 g and four weeks old) were divided into two homogenous groups. The first group received a CD containing 50% of hyperlipidic diet and 50% of junk food mix (processed mix: hyper-fat, hyper-salted and sweetened) (CD group), and the second group (CD + OFI nopalitos) received the same diet supplemented with 50 g of fresh OFI nopalitos (young cladodes) for 30 days.
Findings
OFI nopalitos regulate the hyperuricemia, improve the endothelial dysfunction by raising the bioavailability of nitric oxide(NO) and reduce prooxidant markers by reducing lipid peroxidation and protein oxidation (p < 0.05) and boosting antioxidant capacity and enhancing the antioxidant enzymes activities (p < 0.05) in blood and aorta tissues of rats early fed with a high-fat diet /junk food.
Social implications
By-products of OFI have specific functional properties that may be beneficial in metabolic disorders and offer a better alternative with an economic and sustainable development perspective.
Originality/value
By-products of OFI highlight potential functional properties mainly based on its potent antioxidant capacity. By-products of OFI can be used as a promising nutraceutical resource to prevent various metabolic disorders in relation with cardiovascular diseases or hyperuricemia in subjects consuming junk food and or living in the Western society to reach the objectives of health policy and maintain a sustainable health system development.
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Hadjera Chekkal, Nour el Imane Harrat, Fouad Affane, Fatima Bensalah, Sabrine Louala and Myriem Lamri-Senhadji
This paper aims to evaluate the protective potential of prickly pear cactus fresh cladodes (opuntia ficus indica (OFI)) on glycemic disorders, dyslipidemia, prooxidant/antioxidant…
Abstract
Purpose
This paper aims to evaluate the protective potential of prickly pear cactus fresh cladodes (opuntia ficus indica (OFI)) on glycemic disorders, dyslipidemia, prooxidant/antioxidant stress biomarkers and reverse cholesterol transport (by evaluating the activity of lecithin-cholesterol acyltransferase (LCAT)) and paraoxonase (PON1) in rats prematurely exposed to cafeteria diet (CD).
Design/methodology/approach
Sixteen young rats were divided into two groups fed CD containing 50 per cent of hyperlipidic diet (HLD) and 50 per cent of junk food mix supplemented or not with 50 g of fresh young cladodes of OFI to 100 g of CD, during 30 days.
Findings
OFI cladodes supplementation decreased significantly body weight (p < 0.001), food intake (p < 0.05), adipose tissue weight (p < 0.01), fasting glycemia and glycosylated hemoglobin (p < 0.01), homeostasis model assessment (HOMA-IR) and insulinemia (p < 0.001), levels of cholesterol (C) (p < 0.05) and triacylglycerols (TG) (p < 0.01) in serum and in very low-density lipoproteins (VLDL-C p < 0.05 and VLDL-TG p < 0.01) and improves reverse cholesterol transport by increasing high-density lipoprotein cholesteryl-esters concentrations (p < 0.001) and by stimulating LCAT activity. Moreover, they attenuated lipid peroxidation in VLDL and low-density lipoproteins by increasing atheroprotective activity of PON-1 and in liver and adipose tissue by enhancing enzymatic antioxidant defence.
Social implications
The young cladodes of OFI because of their antiobesity benefits could constitute a novel functional ingredient in pharmaceutical and nutraceutical applications.
Originality/value
Young cladodes of OFI in rat precociously submitted to a hyperlipidic diet/junk food (cafeteria model) seem to prevent metabolic disorders associated with obesity.
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Giuseppina Migliore, Antonino Galati, Pietro Romeo, Maria Crescimanno and Giorgio Schifani
The purpose of this paper is to detect what experience and credence quality attributes contribute to the consumer decision to consume cactus pear fruit. The authors therefore try…
Abstract
Purpose
The purpose of this paper is to detect what experience and credence quality attributes contribute to the consumer decision to consume cactus pear fruit. The authors therefore try to measure the effect of each quality attribute on consumer choice.
Design/methodology/approach
As a theoretical basis, two principal quality attributes emphasised in the literature on consumer behaviour were analysed and adjusted to the specific fruit features. The empirical strategy was carried out by administering a telephone questionnaire survey of 270 interviewees who consume cactus pears in Italy. The questionnaire, consisting of 14 items expressed on a metric scale (five-point Likert scale), was used to rate the importance of cactus pear fruit quality attributes. An ordered logit model was employed for data analysis.
Findings
The results show that consumption of cactus pear fruit is mainly based on credence and experience attributes, which have different effects on the consumer decision to consume cactus pear fruit. Among experience quality attributes, the colour red, a low quantity of seeds, and being peeled are the attributes with major effects, following by credence attributes such as environmental sustainability, healthiness, and Italian origin.
Research limitations/implications
The research was based on a particular fruit, and further comparative research is clearly needed. In fact, further advancement in cactus pear research would require that the validity of the empirical findings and their degree of generalisation be examined in other geographical areas.
Practical implications
The results of this study could help to identify some factors on which business could intervene to create a more effective consumer-based approach.
Originality/value
This study contributes to a better definition of cactus pear fruit quality for consumers with the aim of developing marketing strategies to increase farm business. To the best of the knowledge, no study has ever measured the effects of cactus pear fruit quality attributes on consumer choice.
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Khaled M.M. Koriem, Hend N. Saleh and Marwa A. El-Attar
This paper aims to evaluate systolic blood pressure (SBP), serum sodium/potassium levels and cardiac antioxidants after Artemisia herba-alba oral administration in spontaneous…
Abstract
Purpose
This paper aims to evaluate systolic blood pressure (SBP), serum sodium/potassium levels and cardiac antioxidants after Artemisia herba-alba oral administration in spontaneous hypertensive rats (SHR).
Design/methodology/approach
Hypertension is a silent killer disease. The SHR model was used in this study due to the similarity of high blood pressure in human and rat. The SBP, serum sodium and potassium, urinary sodium and potassium, cardiac antioxidants and heart histology were examined in SHR after oral administration with 10 and 20% of the LD50 of Artemisia herba-alba during four weeks.
Findings
The LD50 of Artemisia herba-alba was found to be 1000 mg/kg. Doses of 100 mg/kg (10% LD50) and 200 mg/kg (20% LD50) were considered in the present study. The oral administration of SHR rats with Artemisia extract at 100 and 200 mg/kg decreased (p < 0.01) the body weights, SBP and serum sodium and potassium. Meanwhile, cardiac superoxide dismutase and gluthatione peroxidase were increased in SHR-treated rats. Histology of SHR cardiac tissues showed tissue degenerative but oral intake of 100 and 200 mg/kg artemisia exhibited normal muscle fibers, acidophilic cytoplasm and central nuclei.
Originality/value
The cardiovascular diseases are the first reason for high death rate in Western countries and collapsing economies due to hypertensive patients suffering high health-care costs. The advantage of hypertension Herba l treatment occurred due to its cheap and available source. Artemisia herba-alba leaves restored SBP, attenuated serum sodium/potassium levels and prevented cardiac oxidative stress in SHR.
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Arthur Rocha-Gomes, Juliana Dara Silva, Thais Angélica Morais, Amanda Rosa da Costa Ferreira, Viviane Cristina Costa, Amanda Escobar Teixeira, Mayara Rodrigues Lessa, Alexandre Alves da Silva, Nísia Andrade Villela Dessimoni-Pinto and Tania Regina Riul
The purpose of this study is to evaluate the nutritional effects in Wistar rats of supplementation with stand-alone saturated fatty acid (SFA) or monounsaturated fatty acid…
Abstract
Purpose
The purpose of this study is to evaluate the nutritional effects in Wistar rats of supplementation with stand-alone saturated fatty acid (SFA) or monounsaturated fatty acid (MUFA), the replacement of SFA by MUFA and the combination of both (SFA + MUFA) over a long period of time (13 weeks).
Design/methodology/approach
In total, 30 Wistar rats were used and randomly assigned to receive (n = 6): control – lab chow; lard (L20%) – lab chow with added lard (20%); olive oil (O20%) – lab chow with added olive oil (20%); lard replacement with olive oil (L20% –O20%) – during six weeks lab chow with added lard (20%) replaced by lab chow with added olive oil (20%) given during the past seven weeks of the trial; lard combination with olive oil (L10% + O10%) – lab chow with added lard (10%) and olive oil (10%). Food and caloric intake, weight gain, food and energy efficiency, body mass index, bone mineral composition and blood biochemistry were evaluated.
Findings
All diets with added fatty acids showed higher energy intake (p < 0.001), weight gain (p = 0.01), accumulation of adipose tissue (p = 0.02) and food and energy efficiency (p = 0.01) compared to the control group. All groups exhibited higher levels of blood triglycerides compared to the control group (p = 0.02). In addition, the L10% + O10% group developed hyperglycemia (p < 0.001); the L group showed higher amounts of non- high density lipoprotein (HDL-c) (p = 0.04); and the L20%−O20% group exhibited high levels of the triglyceride/HDL-c ratio (p = 0.04) in relation to the control.
Originality/value
These results indicate that regardless of the fatty acid type, consumption in large quantities of fatty acids for long periods of time can cause obesity and dyslipidemia.
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Timilehin David Oluwajuyitan, Oluwole Steve Ijarotimi and Tayo Nathaniel Fagbemi
This study was aimed to develop and evaluate nutritional efficacy and bio-efficacy of food products from plantain, soycake, rice-bran and oat-bran flour.
Abstract
Purpose
This study was aimed to develop and evaluate nutritional efficacy and bio-efficacy of food products from plantain, soycake, rice-bran and oat-bran flour.
Design/methodology/approach
The flour samples were blended as follows: plantain 70% and soycake 30% (PS); plantain 65%, soycake 30% and rice bran 5% (PSR); plantain 65%, soycake 30% and oat bran 5% (PSO); and plantain 60%, soycake 30%, rice bran 5% and oat bran 5% (PSRO). Antioxidant and nutritional properties of the blended foods and controls (100% plantain and Cerolina) were determined.
Findings
Protein (16.2–19.4 g/100g) and biological values (98.5–99.3%) of the food samples were significantly (p = 0.03) higher than 100% plantain (5 g/100g, 31.6%) and Cerolina (17.9 g/100g, 98.3%). Pack cell volume (36.2–42%), serum protein (7.3–9.3 mg/dL), urea/creatinine (1.1–2.8) and aspartate-aminotransferase/alanine-aminotransferase ratio (0.9–1) of the foods were significantly (p = 0.03, 0.01, 0.02 and <0.01, respectively) higher than 100% plantain (28%, 1.6 mg/dL, 4.6 and 0.8) and Cerolina (46%, 4.9 mg/dL, 3 and 0.73). In vivo antioxidant activity of the food samples decreased from PSRO to PSO, PSR and PS, respectively and were higher than control samples. Nutritional performance of formulated foods in rats was similar to that of Cerolina, but higher than in 100% plantain. Cerolina and 100% plantain were rated higher in overall acceptability than formulated foods; however, PSO was most preferred followed by PSRO for the formulated foods.
Originality/value
The study established that PSRO was rated best in terms of nutrition, growth performance and antioxidant activities. Hence, this food may be suitable as functional food to prevent malnutrition and oxidative stress.
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