Background: Wheat is a potent allergen source and is one of the causes of baker’s asthma and food allergy. The best strategy for managing food hypersensitivity involves strict avoidance of the trigger. However, wheat...Background: Wheat is a potent allergen source and is one of the causes of baker’s asthma and food allergy. The best strategy for managing food hypersensitivity involves strict avoidance of the trigger. However, wheat is quite difficult to avoid. Several alternative strategies for the treatment of food allergy are under study. Spelt is a possible hypoallergenic crop that may be tried in patients with wheat allergy. Methods: We have evaluated the allergenic IgE hypersensitivity mediated by spelt in wheat allergic patients. Overall, 66 patients who suffered from baker’s asthma or food allergy (45 males and 21 females, mean age 28.6 ± 12.9 years) were included. We have also compared its reactivity with standard- ized extracts from wheat and with purified non-specific lipid transfer proteins from wheat (Tri a 14) and from peach (Pru p 3). Immunodetection with spelt and common bread wheat extracts (Triticum aestivum, cultivar Astral) was per- formed. Fresh wheat and spelt grain extracts were used both for oral and bronchial challenge and skin tests. Specific IgE detection to different cereals was performed using the Immuno CAP System (Phadia, Uppsala, Sweden). The bronchial challenge was positive with wheat Astral in 44 (67%) patients, all of them suffered from asthma. Thirteen (29.54%) of these 44 patients had negative the challenge with spelt. The oral challenge with wheat Astral was positive in 22 (33%) patients with wheat food allergy, and the same test was positive in only in 6 of them with spelt (27.3%). The diagnostic yield (sensitivity, specificity and predictive values) of routine tests in determining spelt allergy by specific positive challenge responses was determined. Prick tests for spelt versus positive challenge tests had a good sensitivity (94%, 86.5 - 99.4;95%CI) and specificity (86%, 84 - 90;95% CI) for the diagnosis of spelt allergy. Immunodetection detected minor differences among different extracts. Conclusion: In summary, the prick test and bronchial and oral challenges both efficiently detected sensitization to spelt and their levels were related to more severe clinical profiles, but the wheal area was significantly lower with spelt (p 0.001) and the percentage of positive challenge tests decreased. Our results suggest that spelt is an old crop that may be tried in patients with wheat allergy.展开更多
Irritable bowel syndrome(IBS) is one of the most common gastrointestinal disorders, having a prevalence of 12%-30% in the general population. Most patientswith IBS attribute their symptoms to adverse food reactions. W...Irritable bowel syndrome(IBS) is one of the most common gastrointestinal disorders, having a prevalence of 12%-30% in the general population. Most patientswith IBS attribute their symptoms to adverse food reactions. We review the role of diet in the pathogenesis of IBS and the importance of dietary factors in the management of these patients. The MEDLINE electronic database(1966 to Jan 2015) was searched using the following keywords: "food", "diet", "food allergy", "food hypersensitivity", "food intolerance", "IBS", "epidemiology", "pathogenesis", "pathophysiology", "diagnosis", "treatment". We found 153 eligible papers; 80 were excluded because: not written in English, exclusive biochemical and experimental research, case reports, reviews, and research otherwise not relevant to our specific interest. We selected 73 papers: 43 original papers, 26 reviews and 4 letters to the editor. These papers focused on IBS pathogenesis, the association between IBS and atopy, and between IBS and food allergy, the relationship between IBS and non-celiac wheat sensitivity, the role of diet in IBS. Pending further scientific evidence, a cautious approach is advisable but the concept of food allergy should be included as a possible cause of IBS, and a dietary approach may have a place in the routine clinical management of IBS.展开更多
Celiac Disease (CD) is an inherited, autoimmune disorder in which proteins from the grains wheat, rye and barley (collectively called gluten) damage the small intestine. The only treatment for CD is a strict, lifelong...Celiac Disease (CD) is an inherited, autoimmune disorder in which proteins from the grains wheat, rye and barley (collectively called gluten) damage the small intestine. The only treatment for CD is a strict, lifelong gluten-free diet. With a prevalence rate of about one in 100-133 people worldwide. Celiac disease is wide-spread across the globe. Unlike traditional allergies, which cause immediate reactions, gluten sensitivity is harder to pin down since it manifests gradually and in various forms like headaches, stomach cramps, bloating, anxiety, and depression. Due to complicated diagnosis procedure and lack of awareness, many cases are either misdiagnosed or not at all diagnosed in India and USA. In spite of high growth, gluten-free foods are facing problems to grain ground in Asian market, due to high price, lack of awareness about the products, large number of un-diagnosed cases and inefficient value chain for gluten-free products. One of the major issues in India and USA is very high prices of gluten-free foods as compared to regular food products. Globally, the market potential of gluten free products is estimated to be USD 4639.13 Million and USD 7594.43 Million in 2015 and 2020 respectively. The global gluten free food market is projected to grow with a CAGR between 9 percent and 10.2 percent during 2016-2022. The study on consumer preference of gluten-free foods would enable manufacturers of gluten-free foods to understand the current and evolving expectations of consumers and to design the products according. Study of two countries i.e., India and USA would enable manufacturers to understand the difference in choices and preferences related to gluten-free foods for both the nations. This study would help manufacturers of alternative wheat product to form the concrete marketing and product development strategy based on recent consumer behavior trends.展开更多
Authentication of pasta is currently determined using molecular biology-based techniques focusing on DNA as the target analyte. Whilst proven to be effective, these approaches can be criticised as being destructive, t...Authentication of pasta is currently determined using molecular biology-based techniques focusing on DNA as the target analyte. Whilst proven to be effective, these approaches can be criticised as being destructive, time consuming, and requiring specialist instrument training. Advances in the field of multispectral imaging (MSI) and hyperspectral imaging (HSI) have facilitated the development of compact imaging platforms with the capability to rapidly differentiate a range of materials (inclusive of grains and seeds) based on surface colour, texture and chemical composition. This preliminary investigation evaluated the applicability of spectral imaging for identification and quantitation of durum wheat grain samples in relation to pasta authenticity. MSI and HSI were capable of rapidly distinguishing between durum wheat and adulterant common wheat cultivars and assigning percentage adulteration levels characterised by low biases and good repeatability estimates. The results demonstrated the potential for spectral imaging based seed/grain adulteration testing to augment existing standard molecular approaches for food authenticity testing.展开更多
【目的】设计旱地开放式增温系统,并从田间温度变化和冬小麦生育期改变等方面来监测系统的增温效果与可靠性。【方法】参考国际已有增温系统,于2007—2009年在江苏南京设计了中国首个麦田开放式增温系统(freeair temperature increase,F...【目的】设计旱地开放式增温系统,并从田间温度变化和冬小麦生育期改变等方面来监测系统的增温效果与可靠性。【方法】参考国际已有增温系统,于2007—2009年在江苏南京设计了中国首个麦田开放式增温系统(freeair temperature increase,FATI),进行冬小麦全天、白天和夜间3种增温试验。【结果】2年试验结果表明,该开放式主动增温系统的增温效果明显。3种情景下各增温小区的均匀有效增温面积在4m2以内,其中全天、白天和夜间增温分别使冬小麦全生育期地下5cm的土温平均增加2.2、1.5和1.8℃,地表温度增加2.2、0.9和1℃,冠层温度增加1.5、0.9和1.1℃。3种增温情景下,冬小麦各关键生育期田间温度的日变化及全生育期日平均温度的变化动态与未增温区的基本一致,增温设施能客观地模拟田间实际气温变化特征。尽管该增温系统略微降低了耕层土壤(0—20cm)水分含量,但降幅仅在0.5—2.2个百分点之间,与对照相比不显著。3种增温情景均对冬小麦生长发育产生了显著影响,全天、白天和夜间增温两年平均分别可以使冬小麦从播种至抽穗期缩短14、9.5和11.5d,灌浆成熟期延长3、3和2.5d。【结论】从增温效果及其对冬小麦的生长影响来看,该套系统基本适用于模拟气候变暖下小麦生产力和品质响应与适应的田间试验研究。展开更多
文摘Background: Wheat is a potent allergen source and is one of the causes of baker’s asthma and food allergy. The best strategy for managing food hypersensitivity involves strict avoidance of the trigger. However, wheat is quite difficult to avoid. Several alternative strategies for the treatment of food allergy are under study. Spelt is a possible hypoallergenic crop that may be tried in patients with wheat allergy. Methods: We have evaluated the allergenic IgE hypersensitivity mediated by spelt in wheat allergic patients. Overall, 66 patients who suffered from baker’s asthma or food allergy (45 males and 21 females, mean age 28.6 ± 12.9 years) were included. We have also compared its reactivity with standard- ized extracts from wheat and with purified non-specific lipid transfer proteins from wheat (Tri a 14) and from peach (Pru p 3). Immunodetection with spelt and common bread wheat extracts (Triticum aestivum, cultivar Astral) was per- formed. Fresh wheat and spelt grain extracts were used both for oral and bronchial challenge and skin tests. Specific IgE detection to different cereals was performed using the Immuno CAP System (Phadia, Uppsala, Sweden). The bronchial challenge was positive with wheat Astral in 44 (67%) patients, all of them suffered from asthma. Thirteen (29.54%) of these 44 patients had negative the challenge with spelt. The oral challenge with wheat Astral was positive in 22 (33%) patients with wheat food allergy, and the same test was positive in only in 6 of them with spelt (27.3%). The diagnostic yield (sensitivity, specificity and predictive values) of routine tests in determining spelt allergy by specific positive challenge responses was determined. Prick tests for spelt versus positive challenge tests had a good sensitivity (94%, 86.5 - 99.4;95%CI) and specificity (86%, 84 - 90;95% CI) for the diagnosis of spelt allergy. Immunodetection detected minor differences among different extracts. Conclusion: In summary, the prick test and bronchial and oral challenges both efficiently detected sensitization to spelt and their levels were related to more severe clinical profiles, but the wheal area was significantly lower with spelt (p 0.001) and the percentage of positive challenge tests decreased. Our results suggest that spelt is an old crop that may be tried in patients with wheat allergy.
文摘Irritable bowel syndrome(IBS) is one of the most common gastrointestinal disorders, having a prevalence of 12%-30% in the general population. Most patientswith IBS attribute their symptoms to adverse food reactions. We review the role of diet in the pathogenesis of IBS and the importance of dietary factors in the management of these patients. The MEDLINE electronic database(1966 to Jan 2015) was searched using the following keywords: "food", "diet", "food allergy", "food hypersensitivity", "food intolerance", "IBS", "epidemiology", "pathogenesis", "pathophysiology", "diagnosis", "treatment". We found 153 eligible papers; 80 were excluded because: not written in English, exclusive biochemical and experimental research, case reports, reviews, and research otherwise not relevant to our specific interest. We selected 73 papers: 43 original papers, 26 reviews and 4 letters to the editor. These papers focused on IBS pathogenesis, the association between IBS and atopy, and between IBS and food allergy, the relationship between IBS and non-celiac wheat sensitivity, the role of diet in IBS. Pending further scientific evidence, a cautious approach is advisable but the concept of food allergy should be included as a possible cause of IBS, and a dietary approach may have a place in the routine clinical management of IBS.
文摘Celiac Disease (CD) is an inherited, autoimmune disorder in which proteins from the grains wheat, rye and barley (collectively called gluten) damage the small intestine. The only treatment for CD is a strict, lifelong gluten-free diet. With a prevalence rate of about one in 100-133 people worldwide. Celiac disease is wide-spread across the globe. Unlike traditional allergies, which cause immediate reactions, gluten sensitivity is harder to pin down since it manifests gradually and in various forms like headaches, stomach cramps, bloating, anxiety, and depression. Due to complicated diagnosis procedure and lack of awareness, many cases are either misdiagnosed or not at all diagnosed in India and USA. In spite of high growth, gluten-free foods are facing problems to grain ground in Asian market, due to high price, lack of awareness about the products, large number of un-diagnosed cases and inefficient value chain for gluten-free products. One of the major issues in India and USA is very high prices of gluten-free foods as compared to regular food products. Globally, the market potential of gluten free products is estimated to be USD 4639.13 Million and USD 7594.43 Million in 2015 and 2020 respectively. The global gluten free food market is projected to grow with a CAGR between 9 percent and 10.2 percent during 2016-2022. The study on consumer preference of gluten-free foods would enable manufacturers of gluten-free foods to understand the current and evolving expectations of consumers and to design the products according. Study of two countries i.e., India and USA would enable manufacturers to understand the difference in choices and preferences related to gluten-free foods for both the nations. This study would help manufacturers of alternative wheat product to form the concrete marketing and product development strategy based on recent consumer behavior trends.
文摘Authentication of pasta is currently determined using molecular biology-based techniques focusing on DNA as the target analyte. Whilst proven to be effective, these approaches can be criticised as being destructive, time consuming, and requiring specialist instrument training. Advances in the field of multispectral imaging (MSI) and hyperspectral imaging (HSI) have facilitated the development of compact imaging platforms with the capability to rapidly differentiate a range of materials (inclusive of grains and seeds) based on surface colour, texture and chemical composition. This preliminary investigation evaluated the applicability of spectral imaging for identification and quantitation of durum wheat grain samples in relation to pasta authenticity. MSI and HSI were capable of rapidly distinguishing between durum wheat and adulterant common wheat cultivars and assigning percentage adulteration levels characterised by low biases and good repeatability estimates. The results demonstrated the potential for spectral imaging based seed/grain adulteration testing to augment existing standard molecular approaches for food authenticity testing.
文摘【目的】设计旱地开放式增温系统,并从田间温度变化和冬小麦生育期改变等方面来监测系统的增温效果与可靠性。【方法】参考国际已有增温系统,于2007—2009年在江苏南京设计了中国首个麦田开放式增温系统(freeair temperature increase,FATI),进行冬小麦全天、白天和夜间3种增温试验。【结果】2年试验结果表明,该开放式主动增温系统的增温效果明显。3种情景下各增温小区的均匀有效增温面积在4m2以内,其中全天、白天和夜间增温分别使冬小麦全生育期地下5cm的土温平均增加2.2、1.5和1.8℃,地表温度增加2.2、0.9和1℃,冠层温度增加1.5、0.9和1.1℃。3种增温情景下,冬小麦各关键生育期田间温度的日变化及全生育期日平均温度的变化动态与未增温区的基本一致,增温设施能客观地模拟田间实际气温变化特征。尽管该增温系统略微降低了耕层土壤(0—20cm)水分含量,但降幅仅在0.5—2.2个百分点之间,与对照相比不显著。3种增温情景均对冬小麦生长发育产生了显著影响,全天、白天和夜间增温两年平均分别可以使冬小麦从播种至抽穗期缩短14、9.5和11.5d,灌浆成熟期延长3、3和2.5d。【结论】从增温效果及其对冬小麦的生长影响来看,该套系统基本适用于模拟气候变暖下小麦生产力和品质响应与适应的田间试验研究。
