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Found 2 results

  1. We're a household of one Celiac and the rest non-gluten free, and we have certain dishes, containers, utensils, etc, that are used exclusively for gluten free eating, and other things (such as glassware, ceramic, etc) that we use for both. We're looking at buying an Instant Pot, which has a brushed stainless steel cooking pot. We understand that stainless steel cookware is safe to share between gluten and gluten-free foods (as long as it's washed really well after use), but does anyone know if brushed stainless steel poses any kind of contamination issue? Thanks!
  2. Celiac.com 09/22/2017 - Misdiagnosed my sophomore/ junior year of High School, 3 years ago, with celiac disease, I became obsessed with the science of this ailment and how it was supposedly affecting me. I was shocked by how little is known about this autoimmune disease and the many gaps in research done on it. One such gap is that of cross-contamination in the household, where it is likely to have a daily impact on those following gluten-free diets. Because of this, I decided to help fill this gap in scientific knowledge with a manageable project based on cross-contamination in the home, asking whether one can share common kitchen cookware that is used with gluten containing foods, or if people, to help maintain a gluten-free diet, need designated ones for their food preparation. Either way that this research played out would be beneficial to the gluten-free community. For example, some families with members on gluten-free diets will spend a lot of money to buy all new ‘gluten-free' designated cookware and utensils to help minimize cross-contamination. Part of the relevancy of this project is economical, as designated cookware can be very costly. Despite the cost, other factors affect the value of this research, including the impracticality of having a double set of kitchen appliances, which would be very bulky and impractical for those with limited space. Another factor that influences the significance of this project is beyond one's home; celiac disease brings a lot of social stress. By assuring there is limited or no cross-contamination from common kitchen appliances after customary washing, these individuals would be able to have some confidence when eating at friends' or families' homes. On the other end, if this research shows that there is cross-contamination with shared supplies it will highlight the need for dedicated ones to maintain a strict gluten-free diet. Just because a gluten-free recipe is used, a given dish may not be genuinely gluten free if there is contamination from cookware. Hazards and Concerns To fully understand the hazards of gluten contamination, a few things must first be established: What is gluten? Who is it harmful to? How and to what extent must it be avoided? How does cross-contamination occur? What is Gluten? The United States Food and Drug Association (FDA) have been trying to define "gluten" for years. The current proposed definition is, "the proteins that naturally occur in a ‘prohibited grain' that may cause adverse health effects in persons with celiac disease."(1) These prohibited grains are any species belonging to triticum, hordeum and secale or more commonly called respectively: wheat, barley, and rye, though other prohibited grains exist as hybrids of any of the three.(2) That being said, not all proteins in these three types of grains are toxic to those with celiac disease as there are two parts to glutens: prolamins, the immunotoxic ones, and glutenins, the safe ones.(3) The prolamins in the three main prohibited grains, wheat, barley, and rye, are gliadin, hordein, and secalin.(4) Who Does Gluten Harm? Gluten is toxic to certain individuals with celiac disease, an autoimmune disease that also goes by the names of: coeliac disease, celiac sprue, nontropical sprue, and gluten-sensitive enteropathy.(5) A Thomson Healthcare Company study estimated that up to 1.5 Million Americans, or one in 133 people, have celiac disease, though other individuals avoid gluten as well, such as those with gluten intolerance, or other ailments where a gluten-free diet is believed to lessen their symptoms.(6) This strict abstention from gluten is because celiac disease cannot be cured, or mediated with medication as yet. The only way to help those affected is by following this strict diet. How and to What Extent Must it be Avoided? Foods that contain wheat, rye, and barley, or any hybrid of these grains contain gluten. Gluten is a very common protein in foods, whether from bread, or as an additive to provide a thicker texture, such as in soups. This versatility makes processed foods, in the eyes of those on gluten-free (gluten-free) diets, something to be wary of. Because of this caution, companies want their products to be certified gluten-free, which according to the FDA calls for Despite current unknowns regarding contamination, a strict gluten-free diet must exclude all foods that contain gluten and minimize cross-contamination. This means from eating out, to staying in, gluten must be avoided. Topical products where gluten is added, such as in some lotions or body washes, should also be avoided. Despite the widespread use of gluten there are gluten-free grains and foods, such as beans, rice, millet, corn, amaranth, and soy. How Does Cross-contamination Occur? Cross-contamination is a term usually directed toward accidental spread of bacteria due to not cooking food, washing hands or materials. However, in this article it refers to the accidental transfer or content of gluten, the protein that is toxic to those with celiac disease. In my personal experience and research on celiac forums, when a member of a family goes gluten-free the family will most likely continue eating a regular diet. In addition, as the average time it takes to be diagnosed from the first onset of symptoms is 10 years in the United States, these families have kitchen supplies that they have been using with gluten.(8) With little public knowledge about celiac disease and going gluten-free, people tend to overlook cross-contamination. Theoretically, in the simple act of making a sandwich with gluten-free bread there are many different ways for it to become contaminated. For example, from a shared jar of peanut butter or jelly with crumbs accidentally getting into it and then dipped out onto the gluten-free bread, or crumbs on the surface it's prepared on sticking to the gluten-free bread. Research Investigation The investigation of common kitchen appliances that are frequently exposed to gluten and cleaned by customary sanitation techniques calls for the conduction of an enzyme linked immunoassay (ELISA) test when using them to prepare gluten-free food. Various well used kitchen appliances, wood and plastic cutting boards, cast iron skillets, both seasoned and unseasoned, Teflon and aluminum pans, and ceramic and glass bowls were contaminated with gluten, using whole wheat flour slurry, and then washed by their standard cleaning technique, either scrubbing with hot soapy water, or wiping with a paper towel and water. Afterward a certified gluten-free substance, in this case millet flour, was added and let sit to allow adherence of any gluten remaining on the ‘cleaned' surface. Figure 1 illustrates the extraction solutions that were made from the samples and injected into the Microwell plates with the anti-body coating and the various washes of the ELISA test. Then, the gliadin, if present, bound to the walls of the wells due to its antibody coating and the wells were washed to eliminate remaining parts in the well. Next, the enzyme Horseradish Peroxidase, or HRP enzyme, adheres post-injection to any gliadin present as an amplifier and is again washed to remove extra parts. Lastly, a 3,3', 5,5'-Tetramethylbenzidine, or TMB substrate was added which turns blue in the presence of a peroxidase, in this case the adhered HRP enzyme, which can only be there if there was gliadin to attach to. This color after a acid stop solution, which turns it yellow, is added is then assessed using a Microwell plate reader for its absorbency which, when compared with a standards curve made from known samples, by the company, will be used to determine the gluten content, in parts per million, of all the samples individually. Results Intuition may lead one to think that well developed standard cleaning techniques for most appliances, and the difficulty in transferring proteins to a gluten-free medium from a surface that has been cleaned, will make gluten cross-contamination unlikely. However, due to factors such as porosity and oiliness, some surfaces may harbor gluten. Typically, far less rigorous cleaning techniques are used on the seasoned cast iron skillet and it is very porous and oily so the gluten proteins have a better chance of binding to it and then transferring to a gluten free medium. Given the test results of the ELISA test, this is mostly true. Despite the logic being the same, and it being the intuitive most likely candidate for cross-contamination a different appliance with the same sanitation technique proved to exceed the gluten parts per million limit where as the cast iron did not. The only absorbency ratings from the samples that interpolated to be greater than the 20 ppm of gluten allowance were two extractions from the Teflon pan. All other ratings, including two other Teflon pan extractions, were below the limit. Conclusion Ninety-four percent of the sample extractions showed less than the 20 parts per million of gluten which is the threshold for something to be declared gluten-free. Teflon had half of its extractions above the limit, as such Teflon should be deemed cross-contaminated. However, the Teflon's other extraction samples had well below 20ppm. This could have been due to the sample's gluten free sample being rather large and thus only part of it could have gotten contaminated (positive cross-contamination) and other parts not (negative cross-contamination). All others samples were classified as gluten-free due to being below the 20ppm allowance. In conclusion, the values of gluten cross-contamination, in ppm, were too small to hinder the integrity of the gluten-free medium in all but Teflon. Thus, to the extent of the experiment done, having tested only eight different kitchen appliances, with only two different sanitation techniques, common kitchen appliances that are frequently exposed to gluten, can be cleaned by customary methods and used to prepare gluten-free food with the exception of Teflon appliances. This research project could be extended by more trials. For example, eight types of common kitchen appliance were used, but only one appliance was used to represent each type. More trials could be done within each type, using different brands, variations in extent of wear, etc. In addition, the only type of contaminant used was whole-wheat slurry. Other forms of contaminant should be tested as well, to show the universality of the cross-contamination, or lack thereof. This should include different gluten-containing substances, as well as some dry and some wet. Unfortunately, this research question will have exceptions as the extent of washing and wear on an appliance is a more subjective issue. This means that even if it is found on a larger scale that certain appliances have been found to be safe for producing gluten-free foods, it should still be avoided when possible for those with celiac disease as if not washed properly; it could go beyond the 20ppm allowance and be immunotoxic to these individuals. Vested interest is always a concern with research, and thus it must be pointed out that no company or university holds any interest in this project and no help was given financially or academically, only that The University of Detroit Mercy allowed me to use their lab for the duration of the experiment and Microwell plate reader. In addition, both sides of the results would prove beneficial, so the data were not interpreted with a bias toward any desired result. Eleanore Dara is a "rising scientist" and is an incoming biochemistry student on a Research Track Major at the University of Scranton in Pensnsylvania. References: "Questions and Answers on the Gluten-Free Labeling Proposed Rule." U S Food and Drug Administration. N.p., 23 Jan. 2007. Web. 31 Jan. 2011. https://www.fda.gov/Food/GuidanceRegulation/GuidanceDocumentsRegulatoryInformation/Allergens/ucm362880.htm Ibid. Amaya-González, et al. "Amperometric Quantification of Gluten in Food Samples Using an ELISA Competitive Assay and Flow Injection Analysis." Electoanaylsis 23.1 (2010): 108+. Wiley Online Library. Web. 8 Mar. 2011. "What Is Gliadin? What Is Its Role In Gluten Sensitivity?." Gluten Free Around The World, Traditional Foods Make Eating an Adventure. N.p., n.d. Web. 25 Mar. 2012. http://www.gluten-free-around-the-world.com/gliadin.html Snyder, Cara et al. "Celiac Disease Coeliac Disease, Celiac Sprue, Nontropical Sprue, Gluten-Sensitive Enteropathy." The National Center for Biotechnology Information. N.p., 3 June 2008. Web. 31 Jan. 2011. Cerrato, Paul L. "Gluten Intolerance: more common than thought. (Complementary Therapies Update)." RN 66.8 (2003): 23. General One File. Web. 28 Mar. 2011. "Questions and Answers on the Gluten-Free Labeling Proposed Rule." U S Food and Drug Administration. N.p., 23 Jan. 2007. Web. 31 Jan. 2011. https://www.fda.gov/Food/GuidanceRegulation/GuidanceDocumentsRegulatoryInformation/Allergens/ucm362880.htm Adams, Scott. "USA - Average Time to Diagnosis = 10 Years - Celiac.com." Celiac Disease & Gluten-free Diet Information at Celiac.com. Scott Adams, 26 July 1996. Web. 16 Feb. 2012. http://www.celiac.com/articles/48/1/USA---Average-Time-to-Diagnosis--10-Years/Page1.html.
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