The Effect of Food Odor Exposure on Appetite and Nutritional Intake of Older Adults with Dementia

Objectives Dementia can lead to decreased appetite and nutritional intake. Food odor exposure has been shown to increase appetite and nutritional intake in young healthy adults. This study investigates the effect of food odor exposure on appetite, nutritional intake and body weight of Dutch nursing home residents with dementia. Design This was a one-armed, non-randomized, non-blinded intervention study consisting of a four-week control period followed by a twelve-week intervention period. Setting Four nursing homes in the Netherlands. Participants Forty-five nursing home residents with dementia. Intervention During the intervention period, odors were dispersed prior to the main meals. Measurements General and specific appetite for sweet and savory foods was measured weekly. Nutritional intake was measured once during the control period and three times during the intervention period through a 3-day food record. Body weight was assessed at the start and end of the control period and at the start, end and halfway the intervention period. Data were analyzed with linear mixed models. Results Small changes in general and specific appetite were observed after odor exposure. Overall energy intake did not change during the first four intervention weeks, but increased during the second and third (+118kcal/d, p=0.003 and +122kcal/d, p=0.004). Protein intake and body weight did not significantly change during the study. Conclusion In this study, no clinically relevant changes in appetite, nutritional intake and body weight were observed after food odor exposure. Future studies should assess the effect of natural food odors and/or meal-tailored odors on nutritional intake of older adults with dementia.

Effect of Food Consumption Values of Vietnamese Consumers on the Reliability and Purchase Intention of Korean Home Meal Replacements

The Vietnamese home meal replacement (HMR) market is expected to face intensified competition due to economic development and urbanization. This study analyzes how the food consumption values of Vietnamese consumers affect the perceived reliability and intention to purchase Korean food in the form of HMRs and provides basic data to establish strategies for Korean HMRs to secure an advantage in an intensely competitive market. A survey was conducted with Vietnamese consumers who had used Korean HMRs before and are constantly using HMRs on a regular basis. To analyze the relationships between food consumption values, the reliability of Korean HMR, and the intention to purchase Korean HMRs, exploratory factor analysis, reliability analysis, confirmatory factor analysis, and covariance structural models were used. Among the factors of food consumption value, health, safety, time saving, and convenience have a positive effect on the reliability of Korean HMRs, while family and cost-effectiveness do not. Moreover, this reliability has a positive effect on the purchase intention of Korean HMRs. This study is significant in that while investigating Korean HMRs, it is pioneering research on Vietnamese consumers regarding HMRs. Therefore, the results of this study can be used to secure the competitiveness of Korean HMRs in the Vietnamese market.

Development of a bowel sound detector adapted to demonstrate the effect of food intake

Objective Bowel sounds (BS) carry useful information about gastrointestinal condition and feeding status. Interest in computerized bowel sound-based analysis has grown recently and techniques have evolved rapidly. An important first step for these analyses is to extract BS segments, whilst neglecting silent periods. The purpose of this study was to develop a convolutional neural network-based BS detector able to detect all types of BS with accurate time stamps, and to investigate the effect of food consumption on some acoustic features of BS with the proposed detector. Results Audio recordings from 40 volunteers were collected and a BS dataset consisting of 6700 manually labelled segments was generated for training and testing the proposed BS detector. The detector attained 91.06% and 90.78% accuracy for the validation dataset and across-subject test dataset, respectively, with a well-balanced sensitivity and specificity. The detection rates evaluated on different BS types were also satisfactory. Four acoustic features were evaluated to investigate the food effect. The total duration and spectral bandwidth of BS showed significant differences before and after food consumption, while no significant difference was observed in mean-crossing rate values. Conclusion We demonstrated that the proposed BS detector is effective in detecting all types of BS, and providing an accurate time stamp for each BS. The characteristics of BS types and the effect on detection accuracy is discussed. The proposed detector could have clinical application for post-operative ileus prognosis, and monitoring of food intake.

Novel Foods and Neophobia: Evidence from Greece, Cyprus, and Uganda

The exploitation of agri-food industrial by-products to produce novel foods is a promising strategy in the framework of policies promoting the bioeconomy and circular economy. Within this context, this study aims to examine the effect of food neophobia and food technology neophobia in the acceptance of a novel food by consumers (through an EU research project: Sybawhey). As a case study, a functional yogurt-like product was developed by synergistic processing of halloumi cheese whey, enriched with banana by-products. The present study contributes to the literature by examining consumers’ perceptions for such a novel food, identifying the profile of potential final users and classifying them according to their “neophobic tendency”. A comparative approach among groups from Greece, Cyprus and Uganda was adopted to explore whether respondents have a different attitude towards this novel yogurt. Results suggest that there is a potential for increasing consumption of novel foods derived by agri-food industrial by-products, but more information about the importance of using by-products are required to enhance consumers’ acceptance of this novel food. Such results may be useful to policy makers, aiming to promote strategies towards the effective reuse of food outputs leading to the manufacture of sustainable novel foods.

How food supply in rubbish dumps affects the breeding success and offspring mortality of cattle Egret Bubulcus ibis?

The objective of this study was to evaluate the effect of food supply in garbage dumps on the reproductive fitness of Cattle Egret Bubulcus ibis and offspring losses. A total of 236 nests were monitored during two distinct periods of 2 years for each: 146 nests during a period without food supply in dumps (1998–1999) and 90 with food supply in dumps (2007–2008). The study was carried out in the colony of El-Kseur in the Lower Soummam Valley (northeast Algeria). For the entire study period, the mean of clutch size, average number of hatched chicks, productivity, and breeding success varied significantly between years (Kruskal–Wallis test: p < .05). Also, the average calculated losses for eggs, chicks, and total offspring vary significantly (Chi2 test: p > .0001). The clutch size and the number of hatched chicks per nest were highest during the period with food supply in garbage dump (respectively: 3.46 ± 0.86; 2.85 ± 1.11), compared to the period when cattle egrets feed in natural or agricultural habitats (3.04 ± 0.87; 2.54 ± 1.03). However, productivity and breeding success were highest during the period without food supply (respectively: 2.11 ± 1.16 fledging’s/nest; 0.70 ± 0.35) than in the period with food supply (1.14 ± 0.91; 0.35 ± 0.30). While egg losses were substantially similar between the two study periods, chick’s mortality (59.9%) and total offspring losses (36.7%) were higher during the period with food supply. The generalized linear mixed model (GLMM) analysis indicated a large negative effect of food supply in dumps on the productivity, on the chick’s losses; and a positive effect on the total offspring losses ( p < .001). Also, feed in dump garbage revealed a significant negative effect on the breeding success linear mixed model (LMM, p = .01). However, no significant effects (GLMM, p > .05) of food supply in dumps were noted on average clutch size, the mean number of hatched chicks per nest, and egg losses.

Food-drug interaction as a risk factor of drug-induced diseases: epidemiology, risk factors, potential mechanisms of interaction

Any drug is potentially associated with the risk of adverse drug reactions (ADRs), the incidence of which in developed and developing countries is estimated at 6.3 (3.3—11.0) and 5.5 % (1.1—16.9), respectively. Many ADRs increase mortality and / or morbidity and / or cause clinical manifestations that require a patient to seek medical help or hospitalization; a special term has been introduced — drug-induced diseases. Food can interact with drugs and increase the risk of ADRs, including serious ones. The simultaneous intake of food and drugs can affect the bioavailability, pharmacokinetics, pharmacodynamics and therapeutic efficacy of drugs due to changes in drug absorption and metabolism. A striking example of the effect of food on the pharmacokinetic profile of drugs is the change in the bioavailability of the tyrosine kinase inhibitor lapatinib: compared with taking on an empty stomach, the bioavailability of lapatinib in a single dose of 1 500 mg after taking it together with high-calorie standard food increases by an average of 325 % — 4.25 times. In other words, the concentration of the drug in the blood serum after taking one tablet at the same time with food is comparable to taking 4 tablets on an empty stomach. Currently, there are no recommendations for choosing a dosage regimen for drugs depending on the qualitative and quantitative composition of food, as well as taking into account potential interactions with food components, although these recommendations are extremely necessary for patients and healthcare professionals. In this regard, this article summarizes the data available at the time of writing in open sources concerning the effect of food on the absorption and metabolism of drugs, and also describes the possible mechanisms of interaction.