Conference Agenda

The objective of this research was to identify the agro-industrial waste of companies in the region, the biomass and energy potential of the waste in the department of La Libertad, the data collection covers the production of the years 2019-2024. Twenty agricultural crops are identified using a Pareto diagram and the analysis is reduced to four crops (asparagus, grapes, blueberries and avocado) that represent 80% of the waste production in the La Libertad region. In the results, biomass production was identified where Blueberry obtained a biomass of 778202 (ton/year), Asparagus 32375 (ton/year), Avocado 32873 (ton/year) and grapes 83081 (ton/year). On the other hand, the total heat energy potential for one of the crops, Blueberry, was identified as 38681 (kwh/year), for Asparagus 112928 (kwh/year), for Avocado it was 1146414 (kwh/year) and finally for grapes with a value of 897366 (kwh/year). In conclusion, the largest in producing biomass is the blueberry with a total production of 778202 (ton/year), in terms of electrical energy potential the greatest is the Avocado with 1146414 (kwh/year). It is recommended to evaluate the heat energy potential of other crops in Peru, to generate a meaningful comparison between the different crops that were analyzed.

The study was carried out with blueberry must to obtain wine, with the aim of analyzing how different concentrations of yeast affect the physical-chemical and sensory parameters. Three treatments were carried out with the must and yeast was applied at 1%, 2% and3%, measuring the brix degrees daily and adjusting the data to the equations to determine the ethanol yield. For sensory acceptability, 50 consumers were surveyed evaluating attributes such as color, aroma, flavor, acidity and general acceptability. Finally, an ethanol yield of 53% was obtained in the three treatments. In sensory acceptability, the treatment with 1% yeast had a higher acceptance. An ANOVA was carried out and a significant difference was shown in the aroma attribute between the treatments with 1%, 2% and 3% yeast, in the flavor attribute between the treatment with 1% and 3% yeast and in the general acceptance attribute between the treatment with 1% and 2% yeast. It was concluded that the different yeast concentrations did not affect the physicochemical parameters of the blueberry must, but they did affect the sensory acceptability in the general acceptability attribute, with T1 (1% yeast) having an average of 4.36.

Abstract– High concentrations of inorganic nitrogen in aquaculture effluents pose a toxic risk to fish production and the environment. In this context, aerobic nitrifying and denitrifying bacteria play a key role. This study evaluated the ability of Pseudomonas sp. and Bacillus sp., isolated from effluents, to reduce ammonium nitrogen, nitrite, and nitrate in wastewater from an ornamental fish farm (Lima, Peru). Four biological treatments were implemented (control, T1: Pseudomonas sp., T2: Bacillus sp., T3: consortium) in aerobic reactors to promote simultaneous nitrification and denitrification processes. The reactors were inoculated with a bacterial concentration of 1.5x10⁷ CFU/ml. During the experiment, nitrogen compounds exceeded optimal levels in the control. In contrast, the bacterial consortium (T3) showed the highest effectiveness, removing nearly 100% of ammonium nitrogen (1.00 ± 0.22 mg/L), nitrite (0.066 ± 0.048 mg/L), and nitrate (16.67 ± 8.17 mg/L) within 96 and 168 hours, respectively. Additionally, T3 maintained stable physicochemical conditions (20°C–23°C, pH 7.47–7.72, DO > 5 mg/L), optimizing its degradative capacity. The results confirm that the consortium of Pseudomonas sp. and Bacillus sp. is effective in removing inorganic nitrogen, standing out as a potential biotechnology for treating and reusing wastewater in ornamental aquaculture.

The study developed and characterized a biodegradable bioplastic from coffee husks, taking advantage of this agroindustrial waste as raw material for a sustainable alternative to conventional plastics. Through a pre-experimental design, bioplastics were formulated with different concentrations of glycerol, combined with cellulose extracted from the husk, cassava starch, acetic acid and distilled water. The bioplastic was made using the casting method and mechanical properties such as tensile strength and elongation were evaluated, as well as physical properties such as thickness and moisture content. Formulation T1 stood out with better performance, achieving a maximum resistance of 2.03 ± 0.3 kg and an average thickness of 0.33 ± 0.005 mm. Statistical analyzes confirmed significant differences between the formulations, indicating that the glycerol concentration directly affects the characteristics of the bioplastic. The results showed that the material is biodegradable, reinforces the circular economy and constitutes a viable solution to reduce the environmental impacts of petroleum-derived plastics

Spirulina cultivation is a significant activity due to its high nutritional value, including proteins, vitamins, minerals, and antioxidants. This study evaluates the influence of technological parameters on the growth and productivity of continuous Arthrospira platensis cultivation in open channels. The impact of temperature, flow velocity, and light intensity on biomass and nutritional values was analyzed. A fractional factorial 2^k-1 experiment was designed with four treatments and three replicates under a semi-controlled environment. Inferential statistical analysis (ANOVA and multiple regression) showed that temperature is the most critical factor in biomass production (F=4147.36, p=0.000), protein content (F=70.43, p=0.000), and minerals such as magnesium, phosphorus, potassium, calcium, and iron. An increase in temperature from 18°C to 28°C led to a rise in biomass from 0.65 g/L to 0.85 g/L and enhanced protein concentration. Flow velocity also had a significant positive impact on biomass (F=1324.96, p=0.000), improving culture homogeneity and nutrient absorption when increased from 0.15 to 0.30 m/s. Meanwhile, light intensity had a negative effect at levels above 20,000 lux, reducing biomass and protein quality. Optimizing temperature and flow velocity is key to maximizing biomass and nutritional quality in open-system spirulina cultivation, while light intensity must be controlled to prevent adverse effects. The results support the development of more efficient and sustainable production systems aligned with industrial demand.