Use of face reading to measure oral processing behaviour and its relation to product perception

Food texture can influence sensory perception and eating behaviour; it can be managed to affect intake, by inducing higher expected satiety and satiation, and eventually reducing overeating. The objective of this work was to assess face reading as an automatic measure of oral processing behaviour of products with different texture modifications, aimed at reducing intake. Three oat breads with different textural properties were used as a case study. A trained panel used Temporal Dominance of Sensations to describe dynamic sensory profiles of the breads and were simultaneously video recorded; the videos were analysed by FaceReader (intake, chewing motions, chewing period). The parameters extracted through face reading showed significant differences among the breads in duration of chewing period and number of chewing motions, which can be interpreted together with the TDS results. A consumer test (n = 135) was conducted on the breads, where participants evaluated overall liking, expected satiation and satiety, and answered a Check-All-That-Apply question including sensory and non-sensory attributes. Results indicated that the samples were significantly different in terms of liking, expected satiation and satiety and that consumers described samples in CATA question in line with the panel. Results interpreted together allowed the identification of the dynamic textural properties responsible for enhancing satiety and satiation expectations. Methodological implications are discussed throughout the paper. The novelty of the study is to show that automatic measures of oral processing behaviour by face reading, can be linked to self-reported explicit measures of satiety, opening the door to larger studies, unfeasible using manual annotation.publishedVersionpublishedVersio

Ultra-processed food consumption and breast cancer risk

Objectives: The consumption of ultra-processed foods (UPF) has been linked to an increased risk of cancer in western populations, particularly for breast cancer (BC). Although the consumption of UPF is increasing rapidly in Latin American (LA) populations too, there has been no evaluation of its association with BC among LA women, where 20% of the BC cases present at ages younger than 45 years. We therefore evaluated the role of UPF intake on BC risk in young women participating in the Latin American PRECAMA study. Methods: The PRECAMA study is an ongoing study coordinated by the International Agency for Research on Cancer (IARC) and involves scientific teams in four LA countries (Chile, Colombia, Costa Rica and Mexico); 406 incident BC cases and population based controls aged 20–45 years are recruited. Trained nurses administered a lifestyle and food frequency questionnaires (FFQ), conducted anthropometric measurements and collected biological samples. Tumour receptor status are determined in a centralized laboratory. UPF consumption was estimated by applying the NOVA classification to the dietary consumption data obtained via the FFQs. The association of the consumption of UPF and BC was determined using conditional logistic regression analysis adjusting for potential confounding factors. Results: The median age at recruitment was 40 years. The median percentage of calories from UPF was 24% (10th to 90th percentile: 9 to 43%). UPF intake was positively associated with BC risk (OR for tertiles 2 and 3 in comparison with tertile 1 were 1.84 (95% CI 1.21 -2.81) and 1.69 (95% CI 0.99 -2.89) respectively). Among the UPF most strongly associated with BC, we identified the intake of industrial bread, packaged sweet and savoury snacks, breakfast cereals, cakes and desserts, and ready-eat/fast food. Comparing the 3rd with the 1st tertile of energy intake from the UPF group “fast food” the OR for BC risk was 1.93 (95% CI 1.23–3.04). Discussion: Our results show positive associations between the consumption of UPF and BC risk in young women in LA. Therefore, global actions to decrease UPF intakes are urgently needed to address the cancer burden. In addition, further studies are needed to disentangle mechanisms relating UPF intake and carcinogenic processes in the breast. The European Prospective Investigation into Cancer and Nutrition (EPIC) study, a large-scale cohort including ∼500,000 participants and 18,814 BC cases will be used to unravel the mechanistic pathways underlying these positive associations between the consumption of UPF and BC risk