The limited availability of information on Chilean native flora has resulted in a lack of knowledge among the general public, and the classification of these plants poses challenges without extensive expertise. This study evaluates the performance of several Deep Learning (DL) models, namely InceptionV3, VGG19, ResNet152, and MobileNetV2, in classifying images representing Chilean native flora. The models are pre-trained on Imagenet. A dataset containing 500 images for each of the 10 classes of native flowers in Chile was curated, resulting in a total of 5000 images. The DL models were applied to this dataset, and their performance was compared based on accuracy and other relevant metrics. The findings highlight the potential of DL models to accurately classify images of Chilean native flora. The results contribute to enhancing the understanding of these plant species and fostering awareness among the general public. Further improvements and applications of DL in ecology and biodiversity research are discussed.
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http://dx.doi.org/10.3389/fpls.2023.1211490 | DOI Listing |
Plants (Basel)
January 2025
Laboratorio de Fitopatología, Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Casilla 4-D, Quillota 2260000, Chile.
In Chile and worldwide, walnut () production faces significant losses due to crown and root rot caused by the phytopathogen . Currently, control methods have proven insufficient or unfavorable for the environment, increasing the need for sustainable alternatives. This research evaluates nanoemulsions based on extracts of medicinal plants endemic to Chile to control in walnut crops.
View Article and Find Full Text PDFMolecules
January 2025
Department of Food Biofunctionality (140b), Institute of Nutritional Sciences, University of Hohenheim, D-70599 Stuttgart, Germany.
Phenolic compounds have antiglycation activity, but the changes occurring during thermal treatment (TT) in these activities are not completely understood. The effects of the extraction conditions of (poly)phenols from fruits, before and after TT, on their antioxidant and antiglycation effects were assessed. (Poly)phenol-enriched extracts (PEEs) from raw and TT (90 °C, 1 h) were extracted using three solvent mixtures (ethanol/water/acetic acid) with increasing water content (0, 24, and 49%) and three solvent-to-solid ratios (5, 10, and 20 mL/g).
View Article and Find Full Text PDFFoods
January 2025
Departamento de Ingeniería Química y Bioprocesos, Pontificia Universidad Católica de Chile, Santiago 6904411, Chile.
The aim of this study was investigating the biological diversity of lactic acid bacteria isolated from Chilean grapes and identifying potential candidates for use as malolactic fermentation starter cultures. The isolated bacteria underwent a comprehensive six-stage screening process, which was mutually exclusive except for the evaluation of tyramine production and citric acid intake. This process included morphological, metabolic, fermentation yield, and resistance tests to identify promising malolactic strains.
View Article and Find Full Text PDFAntioxidants (Basel)
December 2024
Department of Food Science and Chemical Technology, Faculty of Chemical Sciences and Pharmaceutical, Universidad de Chile, St. Dr. Carlos Lorca 964, Independencia, Santiago 8380494, Chile.
Papaya fruit is commonly known for its nutritional and medicinal value. It is a perennial, herbaceous, and trioecious cross-pollinated species with male, female, and hermaphrodite plants. The Chilean papaya, originating from South America, has been extensively spread throughout the Andean nations, cultivated primarily in the Coquimbo and Valparaíso valleys in Chile, between 34°41' and 36°33' latitude south.
View Article and Find Full Text PDFAm J Bot
January 2025
Department of Biology, University of Wisconsin, La Crosse, La Crosse, WI, USA.
Premise: Phelipanche ramosa is an economically damaging parasitic plant that has been reported in North America since the late 1800s. While this species comprises a variety of genetically distinct host races in its native range, the genetic composition of adventive populations in the New World remains unexplored. On the basis of morphological and ecological variation, some have suggested that the closely related P.
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