University of Puerto Rico, Mayaguez Campus
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The University of Puerto Rico at Mayaguez (UPRM), is a land-grant, sea-grant, space-grant state university established in 1911. Today, UPRM is a fully accredited, bilingual, and non-sectarian institution with approximately 12,500 (11,511 undergraduates, 836 master, and 153 doctoral) students and 797 faculty members. It is the second-largest campus of the University of Puerto Rico (UPR) system comprising the Colleges of Agricultural Sciences, Arts and Sciences, Business Administration, and Engineering. The first includes the Agricultural Experiment Station and the Agricultural Extension Service. The UPRM is well known for its science, technology engineering and agricultural programs, the quality of students and faculty, and a profound sense of collegiality.
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PublicationExtraction optimization of pectin from cacao pod husk by pressurized intermittent microwave-assisted technology( 0024-07-10) Flores Cruz, Josseant ; Cardona Martínez, Nelson ; College of Agricultural Sciences ; Pérez Muñoz, Fernando ; Macchiavelli, Raúl E. ; Department of Food Science and Technology ; Carlo, Héctor J.This study investigates how pH and extraction time affect the yield and galacturonic acid (GalA) content of pectin extracted from cocoa pod husks (CPH) using pressurized microwave-assisted extraction (PIMAE). A full factorial design was used to assess the impact of pH (2.0 and 2.5) and extraction time (16 and 20 min) on pectin yield and GalA content. The results indicated complex interactions between pH and extraction time on both pectin yield and GalA content, with only the GalA content being statistically significant. While increasing extraction time slightly increased overall pectin yield, the effect was more pronounced at pH 2.0. A decrease in pH had a dual effect on yield, reducing it at 16 min but increasing it at 20 min. Conversely, decreasing pH consistently increased GalA content, with the most significant effect observed at 16 minutes. Increasing extraction time increased GalA content only at pH 2.5, while it decreased at pH 2.0. A central composite design was used to develop regression models for the response variables and optimize the extraction parameters. A linear regression model adequately fitted the yield data but displayed a low R-squared value (42.3%). The degree of acetylation (DA) was found to be overestimated, affecting the reported GalA content and degree of methylation (DM). A correction factor was applied, resulting in recalculated GalA, DM, and DA values that were more closely aligned with values reported in scientific literature. The low DM values ranging between 30.7% and 43.8% indicated the extraction of a low methoxyl pectin with relatively high acetyl content (6.8 – 18.3%). The corrected GalA data generated a full quadratic model with a high R-squared value (93.8%). Optimization of this model predicted a 70.2% GalA content achievable at pH 2.13 and 17.45 minutes of extraction, producing an 8.2% pectin yield. PIMAE significantly reduced extraction time while maintaining pectin purity above 65% GalA, making it suitable for food applications.
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PublicationCatalina de Erauso - A deviate of seventeenth century Spain(Centro de Publicaciones Académicas, Facultad de Artes y Ciencias, Universidad de Puerto Rico en Mayagüez, 1994) Pérez, Louis C. ; The Pennsylvania State University ; Department of Spanish, Italian and Portuguese ; Plaza, Julio
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PublicationAmericanidad y antillanía en Hostos: Hacia una desmitificación del prócer(Centro de Publicaciones Académicas, Facultad de Artes y Ciencias, Universidad de Puerto Rico en Mayagüez, 1994) Morales Nieves, Alfredo ; University of Puerto Rico at Mayagüez ; Department of Hispanic Studies ; Plaza, Julio
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PublicationAire, mar, tierra y palabras: La literatura infantil y la educación ambiental(Centro de Publicaciones Académicas, Facultad de Artes y Ciencias, Universidad de Puerto Rico en Mayagüez, 1994) Cruzado, Waded ; University of Puerto Rico at Mayagüez ; Department of Humanities
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PublicationPremiación al profesional de la enfermería: Su significado e importancia(Centro de Publicaciones Académicas, Facultad de Artes y Ciencias, Universidad de Puerto Rico en Mayagüez, 1994) Martínez, Delia ; University of Puerto Rico at Mayagüez ; Department of Nursing ; Plaza, Julio
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PublicationPalm, Risa I. and Michael E. Hodgson. Natural Hazards in Puerto Rico: Attitudes, Experience and Behavior of Homeowners. Boulder, Colorado: Program on Environment and Behavior, Institute of Behavioral Science, Monograph #55, 1993. 131 pp(Centro de Publicaciones Académicas, Facultad de Artes y Ciencias, Universidad de Puerto Rico en Mayagüez, 1994) Gutiérrez Sánchez, Jaime ; University of Puerto Rico at Mayagüez ; Department of Social Sciences ; Plaza, Julio
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PublicationEl ideal imperialista de falange española y su proyección sobre Hispanoamérica a través del concepto de "hispanidad"(Centro de Publicaciones Académicas, Facultad de Artes y Ciencias, Universidad de Puerto Rico en Mayagüez, 1994) García Moreno Barco, Francisco ; University of Puerto Rico at Mayagüez ; Department of Hispanic Studies ; Plaza. Julio
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PublicationLa literatura infantil como portavoz de la dignidad humana(Centro de Publicaciones Académicas, Facultad de Artes y Ciencias, Universidad de Puerto Rico en Mayagüez, 1994) Martínez Cruzado, Rosa Fernanda ; University of Puerto Rico at Mayagüez ; Department of Humanities ; Plaza, Julio
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PublicationColón y sus carabelas en la ruta del oro(Centro de Publicaciones Académicas, Facultad de Artes y Ciencias, Universidad de Puerto Rico en Mayagüez, 1994) Ruano, Argimiro ; University of Puerto Rico at Mayagüez ; Department of Humanities ; Plaza, Julio
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PublicationFernández Valledor, Roberto. Identidad nacional y sociedad en la ensayística cubana y puertorriqueña (1920-1940) (Mañach, Marinello, Pedreira y Blanco). Centro de Estudios Avanzados de Puerto Rico y el Caribe: Santo Domingo, 1993, 266 pp(Centro de Publicaciones Académicas, Facultad de Artes y Ciencias, Universidad de Puerto Rico en Mayagüez, 1994) Hernández Reyes, Azucena ; University of Puerto Rico at Aguadilla ; Department of Spanish ; Plaza, Julio
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PublicationTribu(Centro de Publicaciones Académicas, Facultad de Artes y Ciencias, Universidad de Puerto Rico en Mayagüez, 1994) Alós, Teny ; Plaza, Julio
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PublicationUna breve historia... Emmy Noether(1882-1935)(Centro de Publicaciones Académicas, Facultad de Artes y Ciencias, Universidad de Puerto Rico en Mayagüez, 1994) Cáceres-Duque, Luis F. ; University of Puerto Rico at Mayagüez ; Department of Mathematics ; Plaza, Julio
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PublicationAfter androgyny: The dialectics of gender(Centro de Publicaciones Académicas, Facultad de Artes y Ciencias, Universidad de Puerto Rico en Mayagüez, 1994) Batra, Nandita ; University of Puerto Rico at Mayagüez ; Department of English ; Plaza, Julio
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PublicationLa abolición de la esclavitud en Puerto Rico por Eugenio María Hostos(Centro de Publicaciones Académicas, Facultad de Artes y Ciencias, Universidad de Puerto Rico en Mayagüez, 1994) Ruiz Pérez, Sonia ; University of Puerto Rico at Mayagüez ; Department of Social Sciences ; Plaza, Julio
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PublicationLa novela histórica y la mujer caribeña(Centro de Publicaciones Académicas, Facultad de Artes y Ciencias, Universidad de Puerto Rico en Mayagüez, 1994) Rodríguez, Linda María ; University of Puerto Rico at Mayagüez ; Department of English ; Plaza, Julio
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PublicationNochevisor(Centro de Publicaciones Académicas, Facultad de Artes y Ciencias, Universidad de Puerto Rico en Mayagüez, 1994) Alós, Teny ; Plaza, Julio
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PublicationEl Josco: A political fable(Centro de Publicaciones Académicas, Facultad de Artes y Ciencias, Universidad de Puerto Rico en Mayagüez, 1994) Santos Silva, Loreina ; University of Puerto Rico at Mayagüez ; Department of Hispanic Studies ; Plaza, Julio
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PublicationCaptura del insomnio(Centro de Publicaciones Académicas, Facultad de Artes y Ciencias, Universidad de Puerto Rico en Mayagüez, 1994) Alós, Teny ; Plaza, Julio
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PublicationEn torno al alma ensayística de Eugenio María de Hostos(Centro de Publicaciones Académicas, Facultad de Artes y Ciencias, Universidad de Puerto Rico en Mayagüez, 1994) Fernández Valledor, Roberto ; University of Puerto Rico at Mayagüez ; Department of Hispanic Studies ; Plaza, Julio
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PublicationEl concepto computacional de la mente(Centro de Publicaciones Académicas, Facultad de Artes y Ciencias, Universidad de Puerto Rico en Mayagüez, 1994) Sánchez, Halley D. ; University of Puerto Rico at Mayagüez ; Department of Humanities ; Plaza, Julio