Gluten-free Products Research Articles

Access to gluten-free foods for people with coeliac disease in New Zealand.

A strict gluten-free (GF) diet is the current mainstay of treatment for coeliac disease (CD). A limited range of GF foods are available on prescription for those with CD. GF foods purchased in shops are typically more expensive than gluten-containing equivalents. This study sought to understand how New Zealanders with CD obtain GF products and the changes associated with this. Coeliac New Zealand members were asked to complete an anonymous electronic survey in June 2023. Although 24% of the 522 respondents had accessed GF foods on prescription in the past, only 2% currently used the service. One-third of the respondents were unaware of the service. Cost and limited product range were the key reasons for not accessing prescriptions. Most non-prescription GF foods were purchased from a supermarket, with 54% spending over $50 per week on GF foods. Most respondents (90%) would prefer a discount card to purchase GF products. Preferences regarding the prescription service would be to collect products from a local shop (84%) or a pharmacy (42%). This study indicates a very low uptake of GF products on prescription, with awareness, cost, product range and convenience limiting use of the service. Most respondents would prefer financial support for discounted GF products.

Availability and cost of gluten-free products in Algeria

PurposeA strict gluten-free diet (GFD) is the only effective treatment for coeliac disease (CD), which has an increasing prevalence. However, the limited availability and high price of gluten-free products (GFPs) compared to their gluten-containing counterparts (GCCs) are still among the factors that may influence compliance with a strict GFD. The purpose of this study is to assess the availability and price of GFPs in retail stores in a major Algerian city and investigate how they compare to GCCs.Design/methodology/approachWe performed a cross-sectional study that targets a representative number of supermarkets and grocery stores in Constantine (Algeria). All available GFPs as well as their GCCs were recorded. The price per 100 g was recorded for each product.FindingsAmong the 285 visited stores, only 25.4% of them sold GFPs, which were more available at supermarkets than at grocery stores. The category “gluten-free pasta and couscous” was the most represented (43.8%). A total of 64 GFPs were observed across 285 stores investigated, and their price was two to six times higher than that of their GCCs.Originality/valueThis study showed the limited availability and diversity and higher price of processed GFPs in Algeria. This negatively influences compliance with GFD as well as the quality of life of patients with CD. Furthermore, the findings prompt the national government to provide financial support to coeliac individuals.

Starch and Protein Characteristics of Chestnut Flours and Their Applications in Gluten-Free Products.

In the context of valorizing underutilized crops, this study investigated the starch and protein characteristics of chestnut varieties (Balestrera and Rossera) and their potential for use at 15% and 25% in reformulating gluten-free baked snacks and fresh pasta. Chestnut varieties differ in protein and starch content (Balestrera > Rossera), as well as in amylose, dietary fiber, and lipids (Balestrera < Rossera). Differences in starch and amylose content affected starch gelatinization (Balestrera < Rossera), pasting and retrogradation properties, and water absorption capacity at 90 °C (Balestrera > Rossera). No differences in water and oil absorption capacity and mixing properties were observed, neither in the protein profile nor in the nature of protein aggregates. Both varieties exhibited a good aptitude for producing gluten-free baked snacks and fresh pasta, even at enrichment levels of 25%. Overall, this study could provide valuable information for the development of gluten-free products using sustainable, underutilized crops.

Teff: Its applicability in various food uses and potential as a key component in gluten-free food formulations—An overview of existing literature research

In recent years, there has been a significant increase in demand for gluten-free foods. This rise can be attributed to a growing number of individuals opting for gluten-free diets due to factors such as gluten sensitivity and celiac disease. Interest in teff has also increased markedly due to its high protein content, balanced amino acid composition, and rich nutrient contents including fiber, iron, and calcium, along with its gluten-free nature. Additionally, teff exhibits positive functional properties that contribute to improving texture, moisture retention, and shelf life in gluten-free products. Its mild flavor profile allows for versatile applications across a spectrum of culinary applications, enhancing the sensory appeal and taste of gluten-free offerings. This makes it a suitable alternative to wheat and other grains in food applications for individuals with celiac disease. Overall, integrating teff into gluten-free formulations presents an attractive opportunity to enhance the nutritional quality, sensory experience, and market competitiveness of gluten-free products, catering to the diverse needs and preferences of consumers seeking gluten-free alternatives for health, dietary, or lifestyle reasons. Further research and innovation in teff-based product development are crucial to fully unlock its potential and promote inclusive, sustainable growth in the gluten-free food sector. Therefore, these attributes underscore teff's promising role in the global food and beverage industries.

Development of oat malt production technology using plasma-chemically activated aqueous solutions

The object of the study was oat malt production. The result of the presented study is the development of a technology for gluten-free oat malt production using cold plasma-treated technological solutions. The material for the study was oat grain. The main technological task is to obtain high-quality oat malt, which, in turn, will be suitable for producing gluten-free beverages and highly nutritious foods. The expediency of using cold plasma-treated aqueous solutions as an activator of the oat malting process and an effective disinfectant of the technological process and the finished product (oat malt) was experimentally proved. It was confirmed that using cold plasma-treated aqueous solutions can accelerate the oat germination process: the germination energy increased by 6–14 %; germination capacity by 2–10 %. The moisture content of oats when moistened increases by 6–37 %. Analysis of the amylolytic enzymatic activity showed a dynamic increase of 17.6 %. The result was the breakdown of carbohydrates. Thus, the amount of starch decreased by 2.4 %, fiber did not undergo significant changes, and the content of simple sugars increased by 2.3 %. The proteolytic activity of oat malt increased by 18.1 %. An increase in the amount of amino acids in the experimental samples was noted. The total amount of amino acids is 793 mg/100 g of product higher than in the control (i.e. by 3 %). There was also an increase in the content of vitamins B (B1, B2), as well as vitamin C, the content of which increased by 5.6 %. Disinfecting properties of cold plasma-treated aqueous solutions in relation to oat malt were noted. The innovative technology of oat malt production can be implemented in the industrial production of gluten-free malts for the brewing industry and for producing gluten-free foods.

Nutritional, physicochemical, and sensorial characterisation of quinoa-millet enriched gluten-free functional cookies

AbstractThe demand for gluten-free food products is expected to grow in the coming years. Quinoa's versatility allows it to replace traditional grains and adds high nutritional value to grain blends and processed food items. The present study was designed to prepare and evaluate gluten-free cookies by substituting rice with quinoa and keeping pearl and foxtail millet constant. A significant increase in protein (8.0–13.2 g/100 g), crude fibre (2.9–6.2%), ash (0.5–1.7%), and hardness (928.9–1736.9 g) was observed with increasing quinoa supplementation. A positive correlation of crude fibre with protein, hardness, and fracturability was observed at P ≤ 5%. Organoleptic evaluation indicated that cookies with 30% quinoa were overall accepted by the consumer. Also, these cookies had lower acid and peroxide values, thus, had longer shelf-lives. This is the first report for the use of quinoa with the mixture of rice and millet, which could be a decent alternative ingredient for gluten-free cookies formulations.

When toxicity is not just from gluten: a systematic review on financial toxicity and celiac disease

Abstract Background With an incidence of up to ∼2% globally, Celiac Disease (CD) is probably one of the most life-long common chronic conditions. Although ‘Financial toxicity’ (FT) has been mainly linked to oncology, significant financial burdens have been described across all healthcare domains, even in CD and to the unexpected economic effort resulting from illness and the need for treatments. This study aimed to investigate the potential relationship between CD and FT. Methods A systematic literature review was performed according to the PRISMA Statement 2020 guidelines. The search query queried the following databases: PubMed, Scopus, CINAHL and APA PsycInfo. No time and study design limits were included. Results 105 articles were found, and 25 were included in the review. The main results revealed that CD impacts physical health and imposes a significant financial burden on patients and their families. FT in CD is primarily due to the high costs of diagnosis, lifestyle changes, and expenses for gluten-free foods. Several studies highlighted the scarce adherence to the therapeutic diet due to the cost of food and poor acceptance of CD. Furthermore, since 2007, there has been increased attention to the difficulty of finding gluten-free products and their expensive fees. All these aspects, even for low-income countries, were faced differently globally, as documented by the heterogeneity of government subsidy policies highlighting the health inequity. Conclusions Considering the prevalence, a comprehensive health assessment with a global health approach should consider clinical, social, and economic aspects. This regard could improve the quality of life for CD patients and ensure fair and personalised access to care, regardless of their geographical location or financial situation. This review has highlighted the fragmentation of resources available internationally, underlining the relevance from a public health point of view. Key messages • Celiac Disease is one of the most common life-long disorders, and financial toxicity is an aspect that should be taken into account also from a public health point of view to ensure health equity. • The gluten-free diet represents an important therapeutic choice in CD; the related expensive fees could increase scarce adherence and worse health outcomes.

Higher cost of gluten-free products compared to gluten-containing equivalents is mainly attributed to staple foods.

The high cost of gluten-free products (GFPs) is being discussed as a potential barrier to adherence to a gluten-free diet, rendering monitoring of their pricing an ongoing demand in a market subject to continuous fluctuations. The current study aimed to assess the current pricing status of GFPs in the Greek retail market, with a focus on differences between staple and non-staple foods. The retail price and packaging weight of all available GFPs and their gluten-containing (GCPs) counterparts of a GFP-shopping basket (formulated based on the results of a preceding online survey) were recorded by visiting one store of the five most popular reported supermarket chains. The food categories were grouped into staple (e.g. breads, pasta and flours) and non-staple (e.g. chips, sweets and sauces) foods. Adjusting for supermarket chain and product type, a quantile mixed regression model was applied to assess the extent to which median product price (per 100 g) differed between GFPs and GCPs. The unique products recorded were 1058 (of which 408 GFPs), with a total of 2165 retail price recordings. While the overall median price/100 g of GFPs was not found to be significantly different from that of GCPs, the median price of staple GFPs was estimated to be higher than staple GCPs (+€1.03 [95% CI: €0.93; €1.13] per 100 g), whilst that of non-staple GFPs was slightly lower (-€0.20 [95% CI: -€0.37; -€0.02] per 100 g). In conclusion, the persisting higher cost of staple GFPs suggests the need for ongoing financial support for people with coeliac disease.

Incorporation of Chokeberry Pomace into Baked Products: Influence on the Quality of the Dough and the Muffins

The use of pomace in bakery products opens up new possibilities for the management of waste products from the fruit industry. Such activities are integral to the concept of sustainable development and the circular economy. In this research, the quality of dough and final products was analyzed by replacing 10–50% of the typical flour (wheat, rice, and corn) with chokeberry pomace flour. The instrumental color measurements and the sensory analysis showed that the dough and the muffins made with the fruit flour were significantly different from the control samples. Flour substitutions of over 10%, while enriching muffins with chokeberry flour, led to a decrease in product quality (texture, dough rise, sensory quality), especially for muffins with gluten. The sensory study showed that a substitution of 10% of typical flour resulted in products acceptable to potential consumers, but a higher substitution reduced the overall quality. It was found that the use of chokeberry pomace in making muffins was limited and more feasible for gluten-free products.

Enhancement of Corn Flour with Carob Bean for Innovative Gluten-Free Extruded Products.

The aim of this work is to study new, extruded products based on corn flour enriched with carob bean and the evaluation of its functional quality to develop novel gluten-free food products. Five samples based on corn flour with added carob bean flour (5 to 12.5%) were formulated. Extrusion was performed using a single-screw laboratory extruder at pilot plant scale. Extrusion parameters such as color and carbohydrate content (fiber, sucrose, and starch) were evaluated. Carob bean addition led to an increase in starch, soluble fiber, and insoluble fiber. Texture parameters related to hardness (crunchiness) were significantly reduced with the addition of CB (p < 0.05), detectable from a 5% addition of CB and not significant with more CB content. Samples became browner with the addition of CB; however, when the concentrations of CB are high (>5%) no major differences in color were observed. The extrusion process reduced the content of soluble and insoluble fiber, and sucrose in all formulated samples. Extruded samples with 5-7.5% CB seem to be the best formulation in terms of fiber content, color, and texture parameters. These innovative gluten-free foods could be considered as a source of fiber, and a healthier alternative to some commercially available snacks.

Assessment of Gluten-Free Products' Availability and Satisfaction in a Polish Population of Coeliac Disease Patients and Their Caregivers.

Among the most important challenges associated with the gluten-free diet are the high costs and limited availability of gluten-free products, accompanied by the lower nutritional value of gluten-free products. The aim of the presented study was to assess gluten-free products' availability and satisfaction in a Polish population of coeliac-disease patients and their caregivers. The study was conducted in a population of Polish female coeliac-disease patients and female family members/relatives of patients diagnosed with coeliac disease, being members of the Polish Coeliac Society and purchasing gluten-free products. A population of n = 819 was included in the studied group based on the inclusion and exclusion criteria (n = 547 of patients and n = 272 of family members/relatives of patients). The study was conducted as a part of an international project to assess the opinions of coeliac-disease patients about gluten-free products, as well as the availability and prices of gluten-free products in various countries, while an identical questionnaire was applied in all participating countries, with transcultural adaptation applied. Opinions concerning the availability of and satisfaction with gluten-free products were assessed based on a questionnaire of agreement with fixed statements about the accessibility, range and quality of gluten-free products in Poland, with a five-point Likert scale to declare the agreement. This was stratified by the following variables: age, place of residence, being diagnosed with coeliac disease, place of purchasing major grocery shopping, gluten-free products at least occasionally bought online, declared problem(s) with the availability and quality of gluten-free products. While comparing the studied sub-groups, it may be stated that some of them were more satisfied than the other sub-groups with the gluten-free products, including their availability and quality; namely, older respondents were more satisfied than younger ones (p < 0.05), respondents living in small towns/villages were more satisfied than those living in big cities (p < 0.05), respondents undertaking major grocery shopping in hypermarkets were more satisfied than those not doing this (p < 0.05), and respondents not buying gluten-free products online were more satisfied than those undertaking this at least occasionally (p < 0.05). At the same time, respondents diagnosed with coeliac disease were more satisfied with the availability and less satisfied with the quality of gluten-free products, while respondents with diagnosed family members/relatives were less satisfied with the availability and more satisfied with the quality (p < 0.05). The group of female coeliac-disease patients and female family members/relatives of patients diagnosed with coeliac disease was highly diverse in terms of their satisfaction with gluten-free products' availability and quality, whilst older respondents, respondents living in small towns/villages, respondents doing major grocery shopping in hypermarkets, and respondents not buying gluten-free products online were more satisfied. Respondents with family members/relatives diagnosed with coeliac disease declared serious efforts and sacrifice to purchase gluten-free products, which was associated with their higher satisfaction with quality and lower satisfaction with availability, while respondents diagnosed with coeliac disease chose easier options, resulting in their higher satisfaction with availability and lower satisfaction with quality.

Physical, textural, and sensory characteristics of gluten-free cupcakes developed with native and modified by hydrothermal treatment green plantain flours.

Gluten-free diets are characterized by lower nutritional quality. The use of green plantain flour in gluten-free formulations appears as an alternative to overcome this deficiency, considering that green plantains have a relevant content of bioactive compounds, dietary fiber, including resistant starch. The objective of this work was to evaluate the effect of the addition of native and modified by hydrothermal treatment green plantain whole flours in the form of gluten-free cupcakes. The density, yield, and microstructure of the dough, specific volume (SV), height, crumb analysis, color, texture, and sensory acceptability of the cupcakes were evaluated. Partial replacement (40%) of rice flour by native and modified flours produced darker, redder cupcakes, less yellowish and with less color intensity. Sensory analysis revealed higher acceptance for cupcakes with native and modified flours, compared to the control, for appearance, flavor, texture, aroma, and overall acceptance. The native flour was the most viable option, as the cupcake produced with it showed the best values for hardness and chewiness, without changing elasticity and SV, in addition to superior sensory acceptance than the control and similar to cupcakes with other modified flours. PRACTICAL APPLICATION: Pursuing to meet the market demand for gluten-free products, with the cake being one of the most requested products in this market, and taking in account that green banana, from different cultivars, has gained interest for the production of flours. The production of flour and bakery products is of great interest to the food industry, not only because of its flavor and properties but also due to the economic and sustainable viability of producing whole green plantain flour with the potential for application, promoting diversification and innovation in the gluten-free functional products market.

Increasing nutritional value using alternative protein from sago worm in gluten-free biscuit products

Abstract This research aimed to study the nutritional value of sago worm (Rhynchophorus Ferrugineus) powder, evaluate quantity of protein supplementation derived from sago worm in gluten-free biscuit and determine the nutritional value of the gluten-free biscuit products supplemented with protein from sago worm. It was found that the nutritional value in sago worm powder consisting of carbohydrates (11.14%), protein (24.65%), fat (54.18 %), and ash (2.41%) based on total weight. Dietary fibre content was 6.61% and the total energy was 699.99 kilocalories/100 g. As regards physical and chemical properties, increase in inclusion of sago worm powder led to a decrease in moisture content and an increase in quantity of protein. Increasing the sago worm powder resulting to the colour of the biscuits became darker. The results showed that an increase in sago worm hardness and fracturability to decreased. Sensory evaluation using a 9-point hedonic scale showed that the gluten-free biscuit with 5% sago worm powder of the total weight had the highest score. In addition, the developed products contained moisture content, carbohydrate, fat, protein, dietary fibre and ash of 58.86, 32.56, 6.34, 6.61 and 1.02%. The energy value was found to 567.42 Kcal/100 g.

Hydrocolloids in Rice Noodle Production: Enhancing Texture, Cooking Quality, and Sustainability in Gluten-Free Formulations: A Review

This review explores the pivotal role of hydrocolloids in rice noodle production, focusing on their impact on texture, cooking quality, shelf life, and nutritional value. Hydrocolloids such as Konjac Glucomannan, guar gum, xanthan gum, carboxymethyl cellulose (CMC), Carrageenan, and Sodium alginate are critical for improving the structural integrity and sensory attributes of rice noodles, particularly in gluten-free formulations. Their ability to bind water, form gels, and interact with starches and proteins contributes to enhanced noodle elasticity, chewiness, and overall quality. The review also highlights recent technological advancements that have revolutionized hydrocolloid application in rice noodle production, including the use of modern processing equipment, innovative drying techniques, and biodegradable packaging solutions. These advancements not only optimize production efficiency but also align with sustainability trends, addressing consumer demand for environmentally friendly and health-conscious food products. However, challenges such as balancing hydrocolloid concentrations, economic viability, and consumer acceptance remain significant. As the global demand for gluten-free and nutritious products continues to rise, the potential for hydrocolloids in improving rice noodle production remains immense. Future research will be crucial in optimizing hydrocolloid formulations to further enhance the quality and sustainability of rice noodles.

Against the Grain: Consumer’s Purchase Habits and Satisfaction with Gluten-Free Product Offerings in European Food Retail

Across the world and within Europe, a growing number of consumers are choosing to buy gluten-free products. Motivations for a gluten-free diet and the consequences of consuming gluten are varied, from a medical necessity for those diagnosed with celiac disease to a range of health complications and discomfort for those who are gluten-intolerant. In this research, 7296 gluten-free consumers across 13 European countries responded to an online survey on the 33 types of gluten-free products purchased, how frequently they purchased them, their satisfaction with gluten-free quality and availability, the problems they have experienced, and the strategies they have employed to cope with these problems. The investigation examines whether and how these consumer attitudes and behaviors differ between those diagnosed with celiac disease, those who are gluten-intolerant, and those who are caregivers for others with a gluten-free diet. The results show that significant differences existed for all these habits and issues across the three gluten-free consumer groups. Specifically, caregivers purchased most of the gluten-free product types more frequently than the other two groups, experienced more availability problems, and were more likely to shop at multiple stores or make their own gluten-free products. Celiac-diagnosed consumers tended to buy gluten-free products more frequently than those who are gluten-intolerant, and they tended to be the most satisfied with the quality and range of gluten-free offerings. Despite purchasing frequency differences between the groups, the results suggest a similar hierarchy of gluten-free products that could provide the foundation for a European gluten-free food basket.

Chestnut protein as functional ingredients in gluten-free products: evaluation of nutritional properties in native and fermented forms

Chestnut protein as functional ingredients in gluten-free products: evaluation of nutritional properties in native and fermented forms

Food insecurity and other barriers to adherence to a gluten-free diet in individuals with coeliac disease and non-coeliac gluten sensitivity in the Netherlands: a mixed-methods study

ObjectivesTo determine the prevalence of food insecurity among individuals with coeliac disease (CeD) and non-coeliac gluten sensitivity (NCGS) in the Netherlands and explore its association with diet quality and other...

Lived Experiences of Children with Celiac Disease

Background: Children in India who have been diagnosed with celiac disease deal with a variety of challenges and difficulties as a result of their condition. Understanding their experiences is important to help the patients adapt better to the demands of celiac disease and gluten-free diet. Methods: The present study has used a constructivism paradigm as a study design. Participants were recruited through purposive sampling. In-depth telephonic interviews were conducted with 10 children with celiac disease. Thematic analysis was used to analyze the interview data. Results: The main themes and sub-themes that emerged from the data were emotional responses (the feeling of deprivation, the feeling of being different from others, the novelty of gluten-free diet leading to excitement), physical health impact (getting tired easily, delayed growth), social constraints (social limitations brought on by celiac disease, peer pressure to eat gluten, and non-acceptance of celiac disease by others), future concerns (uncertainty about the future, improved physical health, celiac disease cure, dependency on others), navigating dietary changes (fear of cross-contamination, food restrictions caused by celiac disease, non-availability of gluten-free food, and limited food options outside the home), coping strategies, and management of celiac disease (eat home-cooked meals, receiving support from family, and friends, adhering to gluten-free diet). Conclusion: Governmental organizations and experts in mental health must acknowledge the needs of Indian children with celiac disease. The need of the hour is to improve gluten-free product labelling and raise awareness of celiac disease.

Consumer Satisfaction with the Quality and Availability of Gluten-Free Products

The aim of this study is to investigate consumer attitudes toward the quality and availability of gluten-free products. For this purpose, quantitative research was conducted using a questionnaire completed by 107 respondents who consumed gluten-free products. The results of the research showed that most consumers prepared their own meals, paid attention to ingredients, and strictly adhered to a gluten-free diet. About 10% of the respondents declared that they occasionally did not follow a gluten-free diet. Respondents were generally not satisfied with the price and availability of gluten-free products on the market. An additional aggravating circumstance for them when eating out was that restaurants generally do not have a sufficient selection of gluten-free dishes in their daily offer. Although most of them stated that they buy basic, well-known gluten-free products, they want to try new products with different, new flavors. This demand offers food manufacturers the opportunity to capitalize on the rapidly growing gluten-free market by developing creative and sustainable products that not only meet dietary requirements but also exceed consumer expectations. By focusing on innovation and variety, companies can participate in a profitable market while contributing to the growth of a more sustainable economy. The results of this study pointed to consumer preferences that could be used to influence the improvement and development of new gluten-free products, which are on the rise and will have a better nutritional quality and thus had a positive impact on health.

Effects of four kinds of improver on fermentation characteristics of gluten-free rice dough.

Rice is commonly utilized as a wheat bread substitute due to its low allergenicity. However, rice bread faces challenges in processing efficiency and the formation of a cohesive gel network structure, resulting in suboptimal taste Hence, this study compared four improvers-trypsin, whey protein (WPC), hydroxypropyl methyl cellulose (HPMC), and molecularly distilled monoglycerides (GMSs). The impacts of the four improvers on the processing attributes of rice dough were comprehensively assessed across fermentation, moisture content analysis, rheology, heat stability, and pasting characteristics. The findings indicated that the incorporation of trypsin, HPMC, and WPC resulted in 107%, 61%, and 1% increases in gas production of fermented rice dough, respectively, while reducing the regrowth values to 564.00±7.21, 176.67±0.58, and 611.00±3.61cP. Notably, the air-holding capacity of HPMC-fermented rice dough exhibited a 7% enhancement. All four types of improvers raised the enthalpy of melting (ΔH) and the difference in melting point (ΔT) of fermented rice doughs, with trypsin enhancing ΔH by 44% and ΔT by 40%. GMS, HPMC, and WPC increased the degree of water incorporation in fermented doughs. This study could serve as a benchmark for enhancing the fermentation attributes of rice dough and establish a groundwork for the future advancement of gluten-free dietary options. PRACTICAL APPLICATION: The thorough analysis conducted in this experiment provides a theoretical framework for rice dough preparation during the fermentation process, addressing the dietary needs of individuals with coeliac disease and those following a gluten-free diet. This study also paves the way for the development of improved gluten-free rice products in future research pursuits.