共查询到20条相似文献，搜索用时 0 毫秒
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饮食是一个复杂的食品口腔加工过程,包括食物的口腔处理、传送和感官评判等一系列的口腔和大脑行为,而人舌在这一系列的口腔加工过程中起着关键的作用.由于人舌生理结构的复杂性与口腔环境阻碍等原因,所以人们至今无法详细地探究人舌功能及其在食品口腔加工过程中的操作和控制机理,尤其是感知食品在口腔加工过程中的结构和感官的动态变化.本... 相似文献
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Marilize de Villiers Ben Hanson Legini Moodley Mershen Pillay 《Journal of texture studies》2020,51(1):154-168
Modifying food and the textures of food has been done for decades within the food science and technology field. More recently, modifying the texture of foods has been used to manage swallowing disabilities (dysphagia). Swallowing disabilities are often associated with dehydration and malnutrition, thus nutritional intervention has formed part of serving texture-modified diets. The question remains whether these modification techniques are viable for individuals with swallowing disabilities living in majority world countries. This study used two modification methods on a widely used specialized nutritious food (SNF) to determine whether it may be modified and used in dysphagia management. The techniques had to be ergonomic and economically appropriate for individuals with swallowing disabilities living in majority world countries. The International Dysphagia Diet Standardization Initiative's (IDDSI) standards were used to determine whether the texturally modified SNF is safe for swallowing. Rheological measurements were performed to determine apparent viscosity and structure recovery of each sample. The effects of two modification techniques, aeration and particle separation, on the rheological properties of the SNF were also measured and analyzed. It was determined that both milk and water could be used with this SNF to create a dysphagia diet, but only under certain conditions. The overall results indicated that heating the samples increased the apparent viscosity and exacerbated lumping. Room temperature samples had less lumps and could be classified to the desired levels of the IDDSI (Level 2 and Level 4). Using a whisk to aerate the samples reduced lumps significantly and using a sieve to separate particles of liquid samples eliminated lumps. This study provides new data on how texture modification techniques and the IDDSI framework could be adapted to individuals living in majority world countries. By using modification techniques that are ergonomic and economically viable and an SNF with longevity, this study could be useful in guiding future training of nursing staff and caregivers of individuals living in poverty or resource-constrained communities. This study also adds to the data on the rheological properties of dysphagia foods, although this study did not make use of commercial thickeners generally used in the modification of diets. 相似文献
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C. Loret 《Critical reviews in food science and nutrition》2015,55(1):140-145
The effect of food consistency on swallowing function has been widely studied, and it is well recognized that by delaying the flow of the food bolus, thickened liquids can help in the management of swallowing dysfunction. However, fewer studies have been carried out on the impact of food sensory properties and related liking on swallowing function. This paper reviews the role of taste, olfaction, and trigeminal perceptions on swallowing function and highlights the need for a deeper investigation of this aspect of patient diet modification. 相似文献
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Nao Furukawa Yoshihiko Ito Yasue Tanaka Wakana Ito Yoshinori Hattori 《Journal of texture studies》2019,50(3):217-223
Despite the important role of oral texture perception in feeding and nutritional homeostasis, its impairment has not been of particular clinical interest, and no clinical protocol is available to evaluate its acuity. This preliminary study aimed to establish a method to evaluate the acuity of oral texture perception. Because texture perception is regarded as reflecting integrity of the sensorimotor system of the jaw and mouth, we hypothesized that the ability to perceive various aspects of food texture would correlate with each other, and tested our hypothesis in 11 healthy adults. First, we prepared three types of test foods with different dominant textures, each of which comprised a series of stimuli with different ingredient concentrations; we used these test foods in discrimination tests involving pairwise comparison. Tests performed using the up‐down staircase method revealed significant correlation among the discrimination thresholds for three test foods, suggesting that acuities of texture perception correlated with each other across different textural attributes. Second, we examined the associations between the acuity of texture perception and some aspects of mechanical sensation of the tongue: tactile and two‐point discrimination thresholds, as well as the graininess recognition threshold. The acuity of texture perception of the subjects whose sensitivity was low for at least one of these aspects of mechanical sensation (n = 5) was significantly lower than that exhibited by the other subjects (Wilcoxon rank‐sum test, p = 0.0417). We concluded that oral texture perception ability can be evaluated by discrimination tests for specific aspects of texture, using appropriate test foods. 相似文献
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Sirada Sungsinchai Chalida Niamnuy Anusorn Seubsai Paweena Prapainainar Pattra Wattanapan Wasina Thakhiew Vijaya Raghavan Sakamon Devahastin 《International Journal of Food Science & Technology》2021,56(9):4298-4315
Although chemical-free production processes of nanofibrillated cellulose (NFC) have been investigated, comparative studies on the effect of chemical and chemical-free processes to produce NFCs are limited. Combined effect of either of these production routes and defibrillation condition has also never been studied. Here, thermally treated NFCs were produced through microfluidisation for 6–12 passes (ANFC6-ANFC12), while TEMPO-oxidised NFC (TONFC) was prepared at six passes. Proportion of nanocellulose, viscosity, Gʹ and Gʺ values increased with increased microfluidisation pass in the cases of ANFCs. ANFC12 exhibited gel-like behaviour with strongest three-dimensional network structure and required lowest concentration to enhance thin liquid foods into honey-like consistency. TONFC needed to be added by as much as 8.5, 1.3 and 2.3 times the amount of ANFC12 to achieve the same consistency in thickened water, milk and soup, respectively. ANFC12 can also be well used as Pickering emulsifier due to its higher viscosity and gel-like property. 相似文献
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老龄化是当今社会发展的一大趋势,也是人类发展史上前所未有的挑战。老年人随着生理功能的减弱,出现了饮食功能障碍,尤其是咀嚼和吞咽能力受到了很大的影响。不当的饮食会引起呛食,甚至引发吸入性肺炎,严重的还会导致生命危险。因此,如何给老年人提供既营养可口又安全可靠的食品是当今各主要经济发达国家和包括中国在内的一些新兴经济体所要面临的一个重大挑战和民生问题,也是食品工业需要急迫解决的重大课题。本文通过对老年人饮食机理的分析,揭示老年人安全饮食的主要控制机理以及开发老年食品的一些关键因素。同时详细介绍了不同国家饮食障碍者的膳食标准,以给我国养老行业护理人员提供相关的指导,也为我国食品工业开发老年产品提供技术支持。 相似文献
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我国已成为世界上老年人口总量最多的国家,并且处在快速老龄化的阶段。衰老过程伴随着饮食能力逐渐退化,饮食困难/障碍的问题日益凸显,严重影响老年人群身心健康。为老年人提供柔软、美味、健康且具有正常食品形态的质地改良食品,是食品工业面临的巨大挑战。目前,我国食品工业严重缺乏老年特殊食品的产品体系,存在巨大的供给结构不适应需求结构变化的问题。本文基于全球人口迅速老龄化的发展趋势,对老年特殊食品的研究现状和老年人的饮食需求进行讨论,从营养、质构、包装、标签等方面提出老年特殊食品设计的策略。旨在以食品口腔加工理论为基础,利用现代食品加工新技术,为我国老年特殊食品的研究和设计提供创新思路。 相似文献
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There is an increasing demand for texture sensations of bread during mastication, with reformulation being needed. This study investigated how bread structure influences oral processing behavior and texture perception. Variations in bread structure were created by manipulating ingredient additions, including pumpkin content and pumpkin processing methods. Results indicated that the physical, chemical, and structural properties drove the oral processing behaviors, and texture sensations were highly correlated with bolus properties. At the beginning and middle of the mastication, bolus from breads with low pumpkin-content required more saliva and exhibited greater hardness, lower adhesiveness, and a higher proportion of small-piece particles than the bolus from high pumpkin-content breads. Bolus from pumpkin pulp breads required more saliva, and was softer, stickier, and generated particles with a lower degree of degradation than the bolus from pumpkin puree breads. However, at the end period, the bolus properties tended to change to similar values. Low pumpkin content breads were initially perceived chewy, whereas high pumpkin content, soft. The dominance rate for soft sensation was higher and lasted longer in breads with pumpkin puree than in breads with pumpkin pulp. Finally, six bread samples were all perceived as hydrated, sticky, and crumbly. This study contributes to a better understanding of the impact of reformulation on oral behavior and sensory properties. 相似文献
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Melissa Assad-Bustillos Juliette Palier Hanitra Rabesona Yvan Choiset Guy Della Valle Gilles Feron 《Journal of texture studies》2020,51(1):134-143
This study investigated the digestibility of proteins in a pea protein-fortified sponge cake, as well as the impact of the degree of structure of the bolus produced by elderly subjects on the digestibility of proteins by combining ex vivo and in vitro approaches via the standardized protocol INFOGEST. The sponge cakes were consumed by a group of 20 elderly subjects with contrasting physiology, their boli were recovered just before swallowing, and their apparent viscosity was measured to delineate the bolus degree of structure. According to this criterion, two pools were formed with boli from subjects selected at the extremes: low viscosity and high viscosity, with apparent viscosity values (at 120 s−1) of 124 ± 18 and 208 ± 19 Pa s, respectively. The sponge cakes and the two pools underwent in vitro digestion. Protein hydrolysis kinetics was followed by measuring the released primary amino groups (NH2) and by sodium-dodecyl-sulfate polyacrylamide gel electrophoresis at different time points. For all samples, the representative bands of pea proteins disappear gradually during digestion, accompanied by the appearance of bands indicating the presence of proteins with MW < 15 kDa. In addition, the NH2 concentrations increase over time and do not differ between sponge cake and pea protein isolate. Moreover, the degree of structure of the food bolus has no significant effect on the concentration of NH2 released. These results showed that pea proteins in a fortified sponge cake are bioaccessible under standardized conditions and that the degree of structure of the bolus did not influence protein digestibility for these foods. 相似文献
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Mingsong Su Gangying Zheng Yanqiu Chen Hua Xie Weijia Han Qing Yang Jianqin Sun Zhihong Lv Jianshe Chen 《Journal of texture studies》2018,49(1):2-10
Dysphagia is a highly prevalent eating and swallowing disorder among elderly people, impacting negatively on the health and well‐being of those afflicted. With increasing populations of elderly people, food industries are under growing pressure to produce appropriately texture‐modified food for safe consumption by these vulnerable populations. Recently published International Dysphagia Diet Standardisation Initiative (IDDSI) framework provides a new global guideline on texture modification and standardization for dysphagia patients. This work was designed to test the feasibility of IDDSI framework for clinical applications by assessing the correlation between swallowing capability of dysphagia patients and the IDDSI texture levels. Altogether 26 elderly subjects were recruited and assessed for their dysphagia grades using the Water Drinking Test. Subjects were provided with fluid samples constituted at different consistencies from a commercial product and swallowing performance (time of swallowing, number of swallows, and number of coughs) was monitored and recorded. Correlations among swallowing capability parameters were observed. Most importantly, results from this work clearly demonstrated that the severity of dysphagia by water‐based swallow tests correlates positively with the IDDSI fluid thickness aimed at reducing dysphagia symptoms in those patients, confirming the reliability and feasibility of IDDSI framework for clinical applications.
Practical applications
Swallowing disorder or dysphagia occurs commonly among many elderly people and imposes negative impacts on their health and well‐being. Medical professionals can diagnose eating and swallowing capability in a qualitative manner, but have difficulty in making diet recommendation because of the lack of texture guidance. This work confirmed the feasibility of IDDSI framework for clinical and bedside applications. The correlation between the capability grades of swallowing and IDDSI texture levels established in this work provides a useful measure for such applications. 相似文献20.