Search results

1 – 7 of 7
Article
Publication date: 18 May 2012

Pooja R. Singhania and Kasturi Senray

Starchy foods have been emphasized in the diet for reducing hyperglycemia and hyperinsulinemia. However, all starch containing foods respond differently, depending upon various…

Abstract

Purpose

Starchy foods have been emphasized in the diet for reducing hyperglycemia and hyperinsulinemia. However, all starch containing foods respond differently, depending upon various other factors in food such as the amylose:amylopectin ratio, co‐ingredients, methods of cooking, etc. which also impact its metabolic response. During days of fast, in India, potato and sago are the most commonly used food to provide quick source of energy. The purpose of this paper is to determine the functional and nutritional quality of fasting foods such as potato and sago, having higher amylopectin content, with respect to their relative glycemic and insulin response in normal healthy volunteers.

Design/methodology/approach

The postprandial glycemic response to boiled potato and sago khichdi in relation to equal quantity of bread (reference) was compared using Relative Glycemic Potency (RGP) represented as the Glycemic Bread Equivalent (GBE) of foods. Five clinically healthy subjects were fed 100 g of test foods and standard, and their blood glucose and insulin response was recorded at fasting (0 min) and at 30, 60, 90 and 120 min.

Findings

It was found that both potato and sago khichdi produced peak glucose response at 30 min and levels returned to baseline within 60 min. The higher amylopectin content which facilitates faster absorption from the gastro‐intestinal tract and into the cell results in the total area under the curve (AUC) glycemic response to potato and sago khichdi to be significantly lower than that of bread (p < 0.05). The total AUC insulin response to potato (p <0.05) and sago khichdi was also lower than that of bread.

Practical implications

Therefore, starch‐based foods rich in amylopectin lead to quicker absorption of sugar to supply the energy to the energy‐deprived cells common in fasting condition.

Originality/value

The paper shows that the starch present in these fasting foods is typically characterized by a higher amylopectin:amylose ratio.

Details

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

Keywords

Article
Publication date: 13 July 2012

Pooja R. Singhania and Kasturi Sen Ray

Rice is considered a high glycemic index food. However, the overall glycemic response to whole foods differs based on the presence of co‐components, cooking or processing…

Abstract

Purpose

Rice is considered a high glycemic index food. However, the overall glycemic response to whole foods differs based on the presence of co‐components, cooking or processing technique, starch composition, and amount of food consumed. The purpose of this paper is to observe the relative glycemic impact (RGI) of foods based on postprandial glycemic response to equal quantities of test foods and standard‐bread expressed as glycemic bread equivalent (GBE), using rice and its products.

Design/methodology/approach

In total, five clinically healthy adult volunteers were fed 50 g test foods and bread on different days after an overnight fast. Blood sugar and insulin levels at fasting state and at 30, 60, 90 and 120 min after consuming food were recorded and corresponding area under the curve was calculated.

Findings

The GBE was highest for puffed rice at 107 g, whereas same amount of rice kheer and plain boiled rice induced glycemic response equivalent to 19.5 g and 11 g of bread, respectively. RGI of puffed rice was found to be significantly higher than that of rice kheer and boiled rice (p<0.01). Similarly, the total insulinemic effect of puffed rice (71 g) was found to be significantly higher than that of rice (6 g, p<0.01) and rice kheer (19 g, p<0.05).

Practical implications

Despite being prepared from common raw ingredient, all the three test foods produced varied glycemic and insulin responses. This can be attributed to the different processing conditions, change in nutrient composition and total quantity consumed.

Originality/value

The GBE values may constitute a simple and easy‐to‐use tool for consumers to select food in terms of their predicted glycemic and insulin responses, especially in the diabetic or insulin‐resistant group.

Details

Nutrition & Food Science, vol. 42 no. 4
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 27 November 2018

Fatima Bensalah, Nour el Imane Harrat, Fouad Affane, Hadjera Chekkal and Myriem Lamri-Senhadji

The purpose of this study was to determine the effects of whole oat, oat bran and refined oat incorporation in a high-fat diet (HFD) on cardio-metabolic risk biomarkers in rats…

Abstract

Purpose

The purpose of this study was to determine the effects of whole oat, oat bran and refined oat incorporation in a high-fat diet (HFD) on cardio-metabolic risk biomarkers in rats with type 2 diabetes mellitus (T2DM).

Design/methodology/approach

T2DM was induced by feeding male rats with an HFD for 10 weeks, followed by a low dose of streptozotocin. T2DM rats were then divided into four homogeneous groups. Three groups consumed an HFD containing 45 per cent (g/100 g diet) whole oat, oat bran or refined oat. The fourth untreated group (control) received the HFD.

Findings

The results showed that whole oat and oat bran, compared with refined oat and control, effectively reduced food intake (p < 0.007), arterial blood pressure (p = 0.0001), glycemia (p < 0.001), insulinemia (p < 0.01), glycosylated haemoglobin (p < 0.001) as well as homeostasis insulin resistance (HOMA-IR) (p < 0.001). They also improved blood lipid levels and reverse cholesterol transport by reducing serum total cholesterol (p = 0.0001), triacylglycerols (p < 0.05), very-low- (p = 0.0001) and low-density lipoproteins cholesterol contents (p < 0.02) increasing lipids (p < 0.002) and cholesterol excretion (p = 0.0001), and high-density lipoprotein cholesteryl esters (HDL2-CE) concentrations (p = 0.0001) and stimulating lecithin: cholesterol acyltransferase (LCAT) activity (p = 0.0001). Moreover, they attenuated lipid peroxidation by increasing paraoxonase-1 (PON-1) atheroprotective activity (p < 0.05).

Originality/value

In T2DM rats, whole oat and particularly, its bran incorporated into an HFD improves arterial blood pressure, glycemic balance and lipid metabolic pathway by reducing hypertriglyceridemia and hypercholesterolemia and increasing atheroprotective activities of LCAT and PON-1. In contrast, refined oat accentuates the risk factors associated with diabetes.

Details

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

Keywords

Article
Publication date: 11 July 2023

Ji Li, Pradeep Thaker, Deshou Jiang, Qingrong Huang and Chi-Tang Ho

The purpose of this paper is to systematically review the functionalities, safety regulations and product applications of herb Stevia rebaudiana extract. This plant material is…

Abstract

Purpose

The purpose of this paper is to systematically review the functionalities, safety regulations and product applications of herb Stevia rebaudiana extract. This plant material is embedded with multiple functionalities such as antioxidant, antidiabetics, anti-inflammation and antimicrobial. The regulations released from global authorities are covered to ensure the safety premise of stevia. Besides, the product applications of the extract of aerial parts of the herb S. rebaudiana helps us to recognize its value from commercial side.

Design/methodology/approach

Relevant literatures are selected and obtained from main scientific databases such as Google Scholar, Web of Science, PubMed and trade magazines published between 2000 and 2023. The keywords and their possible combinations such as sweetening, antioxidant, antidiabetics, anti-inflammation, safety and product development were used to ensure the preciseness and completeness of literature searching. Major data such as sweetness, total phenolic content and dose together with latter critical conclusions from searched publications were appropriately used and discussed. In this review, approximately 150 scientific literatures were meticulously ordered and analyzed. In applications, it is the first time that sentiment analysis was used to obtain a market assessment of the stevia-containing products.

Findings

This review paper helps rearrange the scientific affairs of those stevia extract’s functions like sweetening, antioxidant, antidiabetics and inflammation. Sweetness indexes of steviol glycosides were summarized together for comparison while various in vitro and in vivo approaches were reviewed to quantify those functions’ capacities and to depict the related mechanism. The regulation of steviol glycoside compounds such as rebaudioside A was established by global authorities such as US Food and Drug Administration and Joint FAO/World Health Organization Expert Committee to ensure the safety endorsement before commercialization. Then, this study discussed about the market performance of stevia ingredients or products with the self-developed data analytics. This study also investigated the product development progress of stevia-containing food products in the categories of beverage, bakery, dairy and confectionery. Those stevia-containing food consumer goods can be acceptable by certain consumers.

Originality/value

This review paper precisely presents the evidential information about the stevia’s multiple functionalities with mechanisms and global regulation milestones. To the best of the authors’ knowledge, it is then the first time to probe the stevia-containing products’ market performance through data analytics.

Details

Nutrition & Food Science , vol. 53 no. 8
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 7 March 2023

Abdullah Syafiq Edyanto, Emy Huriyati, Ainun Nisa, Bira Arumndari Nurrahma and Arta Farmawati

Malnutrition during childhood precedes growth failure and affects the child’s well-being later in life. This study aims to investigate the potency of iron-fortified klutuk banana …

Abstract

Purpose

Malnutrition during childhood precedes growth failure and affects the child’s well-being later in life. This study aims to investigate the potency of iron-fortified klutuk banana (Musa balbisiana Colla) flour on growth parameters and fibroblast growth factor 21 (FGF21) expression in malnourished rat model.

Design/methodology/approach

Rats were allocated into normal control (NC), untreated malnutrition (MC), malnutrition + iron-fortified klutuk banana flour (IBF) and malnutrition + Indonesian Government-issued biscuit (GB). Malnutrition was induced by an isoenergetic low-protein diet for five weeks. The IBF and GB groups were supplemented with IBF 1.2 g/200 gBW and GB 1.2 g/200 gBW, respectively, via gavage daily for three weeks. The body weight and length, the levels of plasma and liver FGF21 and red blood cell indices were analyzed.

Findings

After three weeks of supplementation, the IBF group showed higher body weight (245 ± 13.6 g vs 201.8 ± 16.3 g; p = 0.0004) and length (20.9 ± 0.5 cm vs 19.8 ± 0.5 cm; p = 0.021) compared with the untreated group. The plasma FGF21 level decreased in the IBF group (p = 0.034). The IBF group altered mean corpuscular volume and mean corpuscular hemoglobin, suggesting the IBF might attenuate malnutrition-induced anemia. Overall, the IBF prevented growth failure in malnourished condition. This might be mediated by the suppression of FGF21 expression, along with the prevention of malnutrition and anemia.

Originality/value

This study provides preliminary information about the potential use of rarely consumed banana, klutuk banana, as a supplement to treat malnutrition. This study might help the developing countries to eliminate the widespread malnutrition in economically challenged communities.

Details

Nutrition & Food Science , vol. 53 no. 7
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 3 December 2020

Shweta Suri, Deepika Kathuria, Anusha Mishra and Rajan Sharma

The purpose of this paper is to highlight the biological activities of low-calorie natural sweetener, i.e. monk fruit (Siraitia grosvenorii), which are associated with its…

Abstract

Purpose

The purpose of this paper is to highlight the biological activities of low-calorie natural sweetener, i.e. monk fruit (Siraitia grosvenorii), which are associated with its bioactive constituents.

Design/methodology/approach

Recent investigations focused on biochemical characterization and nutraceutical potential of monk fruit (traditional Chinese perennial vine) have been critically reviewed. Also, the safety and influence of monk fruit on organoleptic characteristics of prepared food products have been documented.

Findings

Biochemistry of monk fruit revealed that mogrosides are the principal compounds responsible for the high-intensity sweetness in the monk fruit. The fruit induces several biological activities including anti-oxidative effect, hypoglycemic response, anti-allergic properties, anti-carcinogenic and anti-tissue damage activities. Attributing to great potential as a bio-functional sweetener in food products, monk fruit extract has been approved as Generally Regarded as Safe.

Originality/value

This paper highlights the biological potential of monk fruit opening the doors to future investigations for its utilization in products of commercial importance including food and pharmaceutical preparations.

Details

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

Keywords

Article
Publication date: 3 January 2022

Rio Jati Kusuma, Desty Ervira Puspaningtyas and Puspita Mardika Sari

The downstream insulin signaling, such as phosphatidylinositol-3-kinase (PI3K)/protein kinase B (Akt) pathway, is an important step for skeletal glucose disposal through the…

Abstract

Purpose

The downstream insulin signaling, such as phosphatidylinositol-3-kinase (PI3K)/protein kinase B (Akt) pathway, is an important step for skeletal glucose disposal through the translocation of glucose transporter (GLUT)-4. In addition, the master of energy regulator adenosine monophosphate-activated kinase (AMPK) is also involved in GLUT-4 translocation, independent from the PI3K/Akt pathway. Fermented cassava tuber or gatot is a traditional food from Indonesia with antihyperglycemic properties. However, the molecular mechanism leading to this effect is unclear. Therefore, this paper aims to evaluate whether the antidiabetic activity of gatot is through PI3K/Akt dependent or AMPK pathway.

Design/methodology/approach

Diabetes mellitus was induced in 20 male Wistar rats by intraperitoneal injection of 65 mg/kg body weight streptozotocin and 230 mg/kg body weight nicotinamide. Diabetic rats were randomly allocated into four groups; negative control, positive control (metformin 100 mg/kg body weight), fermented cassava diet replacing 50% of carbohydrate (FC-50) and 100% of carbohydrate (FC-100) in the diet. Serum glucose, insulin and lipid profile were analyzed before and after four weeks of intervention. Genes expression of PI3K subunit alpha, PI3K subunit beta, PI3K regulatory subunit, Akt and AMPK were analyzed using real time polymerase chain reaction (PCR). GLUT-4 protein expression was performed using immunohistochemistry.

Findings

There is a significant difference (p = 0.000) in serum glucose, insulin, total cholesterol, triglyceride, high density lipoprotein (HDL)-cholesterol and LDL-cholesterol between groups. Skeletal AMPK gene expression was higher and significantly different between FC-100 (p = 0.006) and healthy control groups. No significant difference was observed in the messenger ribonucleic acid (mRNA) expression of the PI3K/Akt pathway among groups. GLUT-4 expression was highly expressed in a positive control group followed by FC-100.

Research limitations/implications

This paper did not characterize the bioactive component that is responsible for increasing mRNA expression of AMPK. This paper also did not analyze the phosphorylation of PI3K/Akt and AMPK that are important in activating the protein.

Originality/value

To the best of the authors’ knowledge, this is the first study that showed the antidiabetic activity of traditional fermented food is through AMPK-dependent activity.

Details

Nutrition & Food Science , vol. 52 no. 2
Type: Research Article
ISSN: 0034-6659

Keywords

1 – 7 of 7