Conference Agenda

Food waste reduction is essential, making preservation a key area of study. In this con-text, we present the development and evaluation of a solar dehydrator as a sustainable solution to this challenge. Two prototypes were designed and constructed: one with forced convection and another with free airflow, aiming to compare their efficacy in fruit dehydration. Experiments were conducted over 63-75 hours, monitoring temperature, humidity, and mass loss. The free airflow dehydrator achieved significantly shorter drying times (63 hours vs. 75 hours, p < 0.05). Both methods effectively reduced fruit moisture content from 80% to 55.2% ± 1.2%. Organoleptic tests indicated that the dehydrated fruit maintained or improved its sensory characteristics compared to commercial products, with average scores of 8.3/10 for taste and 7.9/10 for texture. The initial dehydration rate was 0.37%/h for the free airflow method, decreasing to 0.25%/h at the end of the process. These results demonstrate the potential of solar dehydrators as practical and sustainable tools for food preservation, contributing to food security and the achievement of Sustainable Development Goals 2 and 9 of the 2030 Agenda. The implementation of this technology could significantly reduce food waste and empower rural communities in Mexico and other developing countries.

The aim of this study was to evaluate the effects of UV-C light on lentil (Lens culinaris) under two conditions: with and without salt stress. The main findings were: (i) Lentil showed significant changes (p < 0.05) in color dimension a*, which decreased with increasing UV-C irradiation time. (ii) There were structural changes in the seeds due to UV-C degradation. With increasing irradiation time, more damage was observed in the seed cell wall. (iii) UV-C radiation produced positive and negative stimulatory effects depending on seed condition and irradiation time. The most significant changes (p < 0.05) were observed at 12 and 24 hours after the germination test. From 36 hours onwards, the behavior of all UV-C treatments (0, 1.25, 2.5 and 5 minutes) and set conditions (saline and non-saline) and control samples started to show no variability. iv) Seedling weight increased by about 9% compared to control samples at 5 minutes irradiation time. V) The correlation between fresh weight and color component a* was inverse, i.e. the lower the value of a*, the higher the seedling weight. UV-C could be a sustainable method to produce sprouts and improve the physiological quality of seeds once optimal UV-C irradiation times in and without salt stress conditions are defined.

The coffee bean´s lipids are energy reserves stored in the endosperm in the form of oil bodies intended to be used for the development of the embryo during the germination process. However, due to its low concentration in relation to the seed´s dry weight, the coffee bean is not considered an important source of vegetable oil for industrial purposes. However, when the bean is subjected to supercritical extraction processes during the production of decaffeinated coffees, as well as during the instant coffee production, the oil is isolated, but it must be subjected to subsequent purification processes to separate its different fractions to use those with industrial value. This essay focuses on the study of coffee beans’ lipids (primary metabolites) before and after roasting, their influence on cup quality, biosynthesis and differences linked to the involved species, their metabolism, solubility and extraction, as well as a discussion on the analytical techniques used for its determination.

The objective of this study is to analyze whether there are significant differences in coffee extraction times based on different commercial methods: filtration, evaporation, and immersion. To achieve this, a bifactorial experimental design was employed, using three types of coffee makers (Italian, French press, and drip filter) and three varieties of coffee from well-known brands in the Peruvian market.

To ensure the validity of the statistical model assumptions, normality, homoscedasticity, and independence of residuals tests were conducted. The results showed a significant difference in extraction times with a 95% confidence level. Additionally, a post hoc Tukey-LSD analysis was applied with a significance level of ∝ = 0.05, identifying significantly different mean pairs and determining which method exhibited the longest extraction time.

The findings indicate that the extraction method, particularly pressure and evaporation, is the primary factor influencing coffee preparation time, while the coffee brand has minimal impact. Among the evaluated extraction methods, evaporation, represented by the Italian coffee maker, proved to be the most efficient. In contrast, filtration, associated with the drip filter coffee maker, resulted in the longest extraction time. Meanwhile, immersion, represented by the French press, demonstrated greater stability in preparation times.

This study not only contributes to the understanding of optimal coffee preparation but also serves as a practical case study in engineering education. The implementation of experimental methodologies, statistical data analysis, and process optimization in this work provides a useful didactic approach for disciplines such as chemical engineering, food engineering, and industrial engineering.

Agroindustrial sectors in developing countries requires identifying technologies and innovations and applying technology management methods to enhance efficiency, competitiveness, and quality of life for agricultural producers and their associations. The objective of this paper is to identify and prioritize technologies and innovations related to the Plantain Agroindustrial chain as support for technology transfer processes. This study applies technological management methods to evaluate the feasibility of emerging prototypes in the plantain agri-food chain, using S-curves, inflection points from time series of papers and patents, Patent-Papers matrix, emergence components, Hype Cycle.
The methods used include establishing critical surveillance factors such as plantain- biopolym, biofilm, biodegrade, thermoplast, 5 Scopus search equations, time series analysis via 13 nonlinear regression models in Sigmaplot, Python for validation of inflection points, text mining, NLP, cooccurrence matrices. 27 emergency components were identified through the Hypecycle, in the S curve, the inflection points in 4 time series generated values prior to 2025 and only 1 equation related to biodegradable polymer blends, thermoplastic starch, and biodegradable film generated a turning point in papers in the year 2029, the patent papers matrix allowed to classify the topics and technologies analyzed in four quadrants according to the papers and patents axes, finally the emergency analysis obtained with the vantage point software identified to China, Thailand, and India as main producers with a particular focus on migration to sustainable and safe markets, in the American continent countries such as Brazil, Mexico, the United States, Colombia, and Ecuador are countries with constant and growing research report.