Examinando por Autor "Prieto, Alejandro"

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Addressing challenges in promoting the use of animal-origin textile fibers for mitigating microplastic pollution on earth
(MedCrave Group, 2023-11-27) Frank, Eduardo Narciso; Hick, Michel Victor Hubert; Flores Gutiérrez, Alfonso; Castillo, Maria Flavia; Prieto, Alejandro; Castillo, Melina; Gomez, Maria Betina; Martinez, Adrian; Mamani Cato, Ruben Herberht; Seghetti Frondizi, Diego
The aim of this review is to address the issue of textile-origin microplastics and to provide possible solutions that can be propose through a scientific and development program. The constant expansion of textile production and consumption, driven by population growth and the ubiquity of fast fashion, has triggered environmental contamination resulting from the release of fiber fragments during the washing and use of clothing and household textiles. These fragments, ranging in size from 1 μm to 5 mm, pose a novel source of pollution that not only threatens the health of aquatic animals when ingested but also risks human food safety by infiltrating the food chain. Despite the growing awareness of the environmental impacts of these plastic microfibers (MP) from synthetic textiles, this study departs from conventional actions focused on mitigating microplastic pollution. Instead, it focuses on proposing specific measures to reduce MP emissions and addresses the even greater challenge of replacing these plastic microfibers with animal-origin textile fibers. This approach emerges as a promising and sustainable alternative to counteract the negative environmental impact of the contemporary fashion industry. The essence of this challenge lies in determining the competitiveness of animal-origin textile fibers against MP. To achieve this goal, specific actions are proposed, including the need to reduce both the environmental impact and costs associated with processing animal fibers. The study also emphasizes the importance of effectively highlighting the biological and textile advantages of these fibers to encourage their acceptance and adoption in the competitive textile market. This project addresses concrete strategies to promote the use of animal-origin textile fibers. It suggests optimizing the cleaning process and genetically improving these fibers, considering key aspects such as quality and color. The research also highlights the potential contribution to sustainability certification and well-being associated with the use of animal-origin textile fibers, providing a solid foundation for their adoption in the textile industry. In conclusion, this work not only departs from traditional measures focused on microplastics to address MP release but ventures into more ambitious territory by proposing increased use of animal-origin textile fibers as a path to a more sustainable fashion. Specific actions are outlined to enhance the competitiveness of these fibers in the current market, emphasizing their potential contribution to reducing textile pollution and thus strengthening the transition to more environmentally responsible practices in the fashion industry.
Demografía zootécnica aplicada a los Camélidos Sudamericanos Domésticos
(SUPPRAD, 2019) Hick, Michel Victor Hubert; Prieto, Alejandro; Castillo, Maria Flavia; Flores Gutiérrez, Alfonso; Mamani Cato, Rubén Herberht; Frank, Eduardo
El objetivo central del presente trabajo es realizar una revisión y desarrollo de la metodología Estructura Poblacional, describiendo primero algunos de los conceptos vinculados, luego los alcances posibles, etapas y protocolos utilizados por esta metodología y, finalmente, mencionar antecedentes existentes para poblaciones de Camélidos Sudamericanos domésticos (llamas y alpacas), productores de fibra. Los contenidos del presente trabajo fueron abarcados y expuestos en el V Módulo Demografía zootécnica aplicada a poblaciones productoras de fibra en el marco de la primera edición de la Diplomatura en Producción de fibras textiles. Dicho módulo fue dictado en mayo de 2018 en la FCA-UCC.
Demografía zootécnica aplicada a los camélidos sudamericanos domésticos
(Instituto Nacional de Innovación Agraria - INIA, 2024-07-10) Hick, Michel Victor Hubert; Prieto, Alejandro; Castillo, Maria Flavia; Flores Gutierrez, Alfonso; Mamani Cato, Rubén Herberht; Paredes Peralta, Marcia Marisol; Frank, Eduardo Narciso
Esta presentación tuvo como objetivo describir la metodología Estructura Poblacional y su aplicación en poblaciones de camélidos sudamericanos domésticos (llamas y alpacas), productores de fibra. Se presentan los resultados de relevamientos realizados en Argentina, Perú, Bolivia y Chile.
Effect of fibre diameter, prickle factor and coarse fibre bias on yarn Surface hairiness in South American Camelids (SAC) Fibre.
(MDPI, 2022-02-10) Mamani Cato, Rubén Herberht; Narciso Frank, Eduardo; Prieto, Alejandro; Castillo, Maria Flavia; Condori Rojas, Nicoll; Hick, Michel Victor Hubert
It is well known that objectionable fibres emerge from the surface of the yarn due to the centrifugal force of the spinning device. Furthermore, the hair removal process is based on the same physical principles. However, the fibres that are >30 um (PcF) are the fibres that appear in the hairiness of the yarn and are eliminated by dehairing. It has always been presumed that the PcF was linearly correlated with the diameter of the fibre (MFD) in llamas, but not so in alpaca fibres. Nevertheless, there is evidence that this relationship is curvilinear and behaves the same way in both species. The objectives of this study are to explore the relationship between MFD and PcF in both llamas and alpacas, to explore the existence of a breaking point (BP) in this curvilinear relationship, and to determine the frequency of fleeces that do not require dehairing because the PcF <= 3.2%. In addition, the existence of a positive bias of coarse fibre content on the hairy surface (CFs) of the yarn to coarse fibre content within the yarn fibres (CFy) was determined, which may explain the effect of the dehairing on the prickle factor of SAC fibres. The relationship of PcF on MFD behaves the same way in alpacas and llamas. It conforms to a power distribution and presents a BP of 23 um, with PcF being constant before the BP and increasing significantly after it. Most animals (<=91% of alpacas and <=87% of llamas) are above the threshold (<=3.2%), requiring dehairing to correct it. By means of a shaving technique on the surface of the fabric sample, it was established that the objectionable CFs content is 8.15% higher than the objectionable CFy content. In the evoked-coarse fibre in the dehaired samples, a CFs-CFy difference below 5.9% (p > 0.05) is not significantly detected by panellists. The surface MFD is more than 2.7 um coarser than the yarn MFD.
The Prickle Effect Comes From Fabrics Made of South American Camelid (Alpaca and Lama) Fibers. Mechanical and/or Genetic Solutions
(Society for Science and Education, 2021-06-25) Prieto, Alejandro; Castillo, Maria Flavia; Seghetti Frondizi, Diego G.; Mamani Cato, Rubén Herberht; Hick, Michel Victor Hubert; Frank, Eduardo
In this paper we intends to analyze the physical attributes that determine the comfort of fabrics made of South American Camelid fibers (Lama and Alpaca), the effect on their value and their possible mechanical and/or genetic solutions. While emphasis has always been on mean fiber diameter, the fiber frequency exceeding 30 microns has a key role in quality. This is essential for light fabrics, where the effect of prickle plays a critical part in consumer´s choice. Yet the genetic solution of the problem lies in the slow selection response. Dehairing provides an immediate solution, though excessive fiber breakage should be addressed. It is concluded that the textile fiber quality of South American Camelids is promissory if the presence of objectionable fibers is solved, resulting in a tolerable frequency for consumers (<3%). This process could be explored via genetic selection or applying dehairing technology. This implies a true paradigm shift with regard to the classic textile processing of Alpaca and Lama fibers. This would enhance the fiber softness to touch, together with other important features that would render the fiber price more competitive.