Summary:

Throughout her career, Dr. Guerrero Alvarez has been actively engaged in various research areas, showcasing a versatile range of interests. Her work includes the exploration of coffee metabolites, utilization of sericulture by-products, characterization of vegetable oils, biodiesel production, and the study of bioactive compounds in annonaceas.

The research conducted by Gloria Edith Guerrero Alvarez and Nathalia Cardona Hurtado focuses on understanding the defense mechanisms of Rubus glaucus Benth (blackberry) against Peronospora sparsa, a fungus causing downy mildew disease in blackberry crops in Colombia. The study aims to identify the taxonomic identity of the pathogen, evaluate antioxidant capacity and total phenol content, and identify secondary metabolites associated with the plant’s response to biotic stress.

Methods and Results:

Taxonomic Identification:

• The fungus causing the disease in blackberry crops was identified as Peronospora sparsa through polymerase chain reaction (PCR) amplification.

Antioxidant Capacity and Total Phenol Content:

• Antioxidant activity was assessed using DPPH, ABTS, and FRAP methods.
• In affected blackberry fruits, a significant increase in antioxidant capacity was observed compared to healthy fruits.
• Antioxidant capacity values ranged between 53.975 ± 1.312 and 74.758 ± 0.058 µmol TE g − 1 (DPPH method), 15.626 ± 0.838 and 19.116 ± 0.086 µmol TE g − 1 (ABTS method), and 61.050 ± 1.274 and 124.271 ± 1.148 mmol Trolox g − 1 (FRAP method).
• Healthy fruits exhibited lower antioxidant capacity values.

Phenolic Compounds:

• Total phenol content was analyzed using the Folin-Ciocalteu method.
• The phenolic content in affected fruits ranged from 8.322 ± 0.879 to 13.372 ± 0.18 mg g − 1, while healthy fruits showed lower concentrations (7.88 ± 0.172 to 10.519 ± 0.071 mg g − 1).
• Phenolic compounds tentatively identified include derivatives of phenolic acids (e.g., ellagic acid, gallic acid), tannins, and flavonoids.

Phytosterol Analysis:

• GC–MS analysis was conducted for the identification of phytosterols.
• Higher concentrations of β-sitosterol and campesterol were identified in affected fruits.

Conclusion: The study concludes that the increase in certain secondary metabolites, including antioxidants and phenolic compounds, in blackberry fruits is a defense mechanism against the pathogen Peronospora sparsa. The findings contribute to understanding the plant-pathogen interaction, highlighting the need for further investigation into other types of metabolites associated with this interaction.

Education:

• Completed a Ph.D. in Chemical Sciences at Universidad Nacional de Colombia, Sede Bogota.
• Thesis Title: “Estudio de algunos metabolitos secundarios de la variedad Volombia y otros genotipos relacionados de cafe” (Study of some secondary metabolites of the Volombia variety and other related coffee genotypes).

Research Focus:

Based on the provided information, Dr. Gloria Edith Guerrero Alvarez has been involved in a diverse range of research activities. While the specific focus areas may vary over time, her research interests cover various aspects of chemistry, agriculture, and biochemistry. Here are some of the research focus areas:

• Coffee Metabolites
• Utilization of Sericulture By-Products
• Vegetable Oils
• Biodiesel Production
• Acetogenins of Annonaceas
• Diterpenes in Coffee
• Palm Oil Lipogenesis
• Genetic Improvement of Coffee
• Oleochemistry
• Protein Recovery from Silk
• Bioactive Compounds in Annonaceas

Academic Background:

Thank you for providing additional details about Dr. Gloria Edith Guerrero Alvarez’s academic background. Here’s a more detailed entry for her Doctorado en Ciencias Quimicas:

Doctorado en Ciencias Quimicas (Ph.D. in Chemical Sciences)

University: Universidad Nacional de Colombia, Sede Bogota

Year: January 1993

Thesis Title: “Estudio de algunos metabolitos secundarios de la variedad Volombia y otros genotipos relacionados de cafe” (Study of some secondary metabolites of the Volombia variety and other related coffee genotypes).

This research focused on the exploration of secondary metabolites in the Volombia variety of coffee and other related genotypes. The study likely delved into the chemical composition and characteristics of these metabolites, contributing to the broader understanding of coffee chemistry and potentially its implications for flavor, aroma, or other qualities in coffee beans.

Professional Experience:

Thank you for providing additional details on Dr. Gloria Edith Guerrero Alvarez’s professional experience at Universidad Tecnológica de Pereira. Here is a more detailed entry for her tenure at the university:

Universidad Tecnológica de Pereira

Position: Assistant Professor (Dedicated 40 hours weekly)

Duration: Since June 2002

Activities of Administration:

Member of the center council (July 2003)

Teaching Activities:

Undergraduate courses in Organic Chemistry I, Inorganic Chemistry, and coordination of thesis work (June 2002)

Research and Development Activities:

• Study of silkworm oil (Enero)
• Characterization of vegetable oils (Enero)
• Utilization of by-products of sericulture (Enero)
• Study of oil from the chrysalis of the silkworm Bombix mori Linn (Enero)
• Study of bioactive compounds in annonaceas (Enero 2005)
• Characterization and utilization of vegetable oils (Enero 2004)
• Characterization and utilization of sericin from different sources of the sericultural industry (Enero 2004)
• Utilization of the chrysalis or pupa of the silkworm (Bombix mori Lin) for obtaining oil and derivatives (Enero 200)

This entry outlines her teaching responsibilities, administrative role, and diverse research and development activities, emphasizing her contributions to the study of silkworm oil, characterization of vegetable oils, and the utilization of by-products in the sericulture industry.

Publications Top Noted & Contributions:

Title: The importance of protesters’ morals: Moral obligation as a key variable to understand collective action

• Authors: JM Sabucedo, M Dono, M Alzate, G Seoane
• Journal: Frontiers in Psychology
• Volume: 9
• Page: 418
• Citations: 111
• Year: 2018

Title: Chlorogenic acids as a potential criterion in coffee genotype selections

• Authors: G Guerrero, M Suárez, G Moreno
• Journal: Journal of Agricultural and Food Chemistry
• Volume: 49 (5)
• Pages: 2454-2458
• Citations: 48
• Year: 2001

Title: Actividad antibacteriana de la cáscara de cacao, Theobroma cacao L

• Authors: O Cuéllar, G Guerrero
• Journal: Revista MVZ Córdoba
• Volume: 17 (3)
• Pages: 3176-3183
• Citations: 33
• Year: 2012

Title: Political protest in times of crisis. Construction of new frames of diagnosis and emotional climate

• Authors: JM Sabucedo, I Barreto, G Seoane, M Alzate, C Gómez-Román, X Vilas
• Journal: Frontiers in Psychology
• Volume: 8
• Page: 1568
• Citations: 24
• Year: 2017

Title: Implementación de un método de extracción de pectina obtenida del subproducto agroindustrial cascarilla de cacao

• Authors: G Guerrero, D Suárez, D Orozco
• Journal: Temas Agrarios
• Volume: 22 (1)
• Pages: 85-90

Author Metrics:

• Citations: 42 citations by 39 documents.
• Documents: 20 publications.
• H-Index: 4
• oduct, cocoa husk (cascarilla de cacao). It may detail the process and potential applications of extracted pectin.