Ciencias Exactas y Ciencias de la Salud

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Effects of solid-state fermentation of pineapple peel with L. plantarum, L. rhamnosus and A. oryzae on the production of antioxidant and anti-inflammatory compounds
(Instituto Tecnológico y de Estudios Superiores de Monterrey, 2022-06-15) Martinez Alvarado, Lucio; ANTUNES RICARDO, MARILENA; 387691; Antunes Ricardo, Marilena; puemcuervo; Lazo Vélez, Marco Antonio; Acevedo Pacheco, Laura; Vázquez Rodríguez, Benjamín; School of Engineering and Sciences; Campus Monterrey; Acosta Estrada, Beatriz Andrea
The increase in cardiovascular diseases around the world, in addition to metabolic alterations derived from an inadequate diet, have highlighted the need to consume more nutritious and healthy foods that can also provide added value in the prevention of non-communicable diseases. On the other hand, there is an alarming increase in the amount of crop residues caused by bad management in several stages of the supply chain. Interestingly, most of the crop residues are rich in bioactive compounds that can be used to prevent cardiovascular diseases. A fruit that is rich in bioactive compounds that have the potential to prevent these diseases, but is also incredibly wasted, is pineapple sub-products. Different strategies have been developed to take advantage of the potential of these residues rich in nutraceuticals through the enhancement of the content of nutraceutical compounds, as well as the increase of the bioavailability of them, in order to incorporate these residues as a functional ingredient in some foods. A nutraceutical enrichment technique that is suitable to take advantage of pineapple byproducts is solid-state fermentation. Solid-state fermentation has the potential to be an easy-to-scale method for the production of bioactive compounds from pineapple. In addition, because the microorganisms used are generally recognized as safe, their application in the industry is not limited. In this work, the effects of solid-state fermentation of pineapple peels with L. plantarum, L. rhamnosus and A. oryzae on the release of phenolic compounds and its antioxidant and anti-inflammatory activities were evaluated. Pineapple peel extracts after solid-state fermentation had an increase on the release of phenolic compounds (248.11% with L. plantarum, 182% with A. oryzae, and 180.10% with L. rhamnosus), which led to an increase in the cellular antioxidant (81.94% with L. rhamnosus) and antiinflammatory potential (nitric oxide inhibition of 62% with L. rhamnosus) compared to non-fermented extracts. Solid-state fermentation of pineapple peels with L. plantarum, L. rhamnosus and A. oryzae thrives a new approach for the production of bioactive compounds that have anti-inflammatory and antioxidant properties. Which can be the precursors for novel biofortified, and nutraceutical enriched foods that meet the needs of the most demanding and health-conscious consumers
Solid-state fermentation for enhanced extractability of nutraceutical compounds of tomato by-products
(Instituto Tecnológico y de Estudios Superiores de Monterrey, 2020-12-02) Cano y Postigo, Luis Octavio; García Cayuela, Tomás; hermlugo/tolmquevedo; García Amézquita, Luis Eduardo; Navarro López, Diego Eloyr; Escuela de Ingeniería y Ciencias; Campus Monterrey; Jacobo Velázquez, Daniel Alberto
Tomato pomace is a food industry by-product produced in significant quantities, mainly composed of the tomato seeds and peel, and pulp residues. This organic by-product is both rich in functional nutraceutical compounds like carotenes and phenolic compounds, which have proven to offer antioxidant, anti-inflammatory and anti-carcinogenic properties. Nutraceutical compounds can be extracted by a wide variety of techniques, like with the use of organic solvents, enzymatic hydrolysis, supercritical fluid extraction, or ultrasound- assisted extraction. Solid-state fermentation (SSF) is a bioprocessing technique that has previously been used to generate compounds of interest. However, it has not been used as a specialized pretreatment for extracting nutraceutical compounds already present in the substrate. Based on that, this study aimed to evaluate the potential effectiveness of an SSF as part of pretreatment to increase the extraction of nutraceutical compounds like lycopene and phenolic compounds. The extractions of SSF were directly compared with other pretreatments, including industrial-grade enzymes and enzymatic cocktails from fungi. Two fungal strains, Aspergillus niger ATCC 6275 and Rhizopus oryzae BIOTEC00X (isolated from agave pomace and identified by MALDI-TOF mass spectrometry), were used for the fermentation of tomato pomace for three 3 days at 30 °C and 80% humidity. Then, the tomato pomace was dried until constant weight and was subsequently subjected to an extraction using hexane for total carotenes and methanol for total phenolic compounds. Spectrophotometric measurements were used as a quick screening method to determine the best extraction performance. Results showed that SSF as a pretreatment helped to obtain between 50-60% more carotenes than the control, while commercial enzymes offered an increase of 107%. The best treatment for phenolics was obtained with an enzyme-rich broth, with an increase of 90-97% in extracted total phenolics, followed by the SSF with an increase of a 24-38% over the controls. Individual phenolic compounds were identified and quantified by the application of ultra-high-performance liquid chromatography (UHPLC). This technique allowed the tentative identification of 15 compounds, from which naringenin derivative III, protocatechuic acid and feruloylquinic acid were the most susceptible to variate depending on the pretreatment applied to the tomato pomace. It is concluded that SSF increases the extraction of nutraceutical compounds present in tomato by-products and could become an alternative method of extraction at an industrial scale, given that it is an innovative and green technology.

Ciencias Exactas y Ciencias de la Salud

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