Examinando por Autor "Patel, Kirti"

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Agro-morphological characteristics and sensory evaluation of native peruvian chili peppers
(David Publishing Company, 2016-09-28) Patel, Kirti; Calderon, Rosa; Asencios, Edgard; Vilchez Palomino, Dioliza; Marcelo Salvador, Mavel Nansi; Rojas, Rosario
In this work, 31 native Peruvian chili peppers were evaluated for their agro-morphological characteristics and sensory attributes. The descriptive sensory analysis (DSA) was used to evaluate the 31 chili pepper samples based on their acid, bell pepper, sweet, tomato, apple, citrus, fruity, herbal, oregano and passion fruit attributes. The data obtained from the DSA enabled the grouping of these 31 chili peppers into six groups based on their different sensory attributes, such as fruity, bell pepper and herbal. The most abundant group (12 of the 31) had the bell pepper, apple, herbal, fruity and sweet attributes. Each group contained different species and different physical appearances, indicating that species or different forms of chili pepper do not define that sensory attribute. Considering the fact that Peruvian peppers are in high demand, the results achieved would be useful for growers, producers and chefs, as well as for further breeding activities.
Ajíes Nativos Peruanos - Caracterización Agro-morfológica, químico - nutricional y sensorial
(Universidad Peruana Cayetano Heredia, 2016-06) Quispe Jacobo, Fredy Enrique; Rojas, Rosario; Patel, Kirti; Ruíz, Candy; Calderón, Rosa; Ascencios, Edgard; Marcelo Salvador, Mavel
El libro “Ajíes Nativos Peruanos, Caracterización agro-morfológica, químico-nutricional y sensorial” es un documento que se ejecutó dentro del Proyecto “Caracterización de ajíes nativos por sus atributos sensoriales y funcionales para la mejora de la pequeña/mediana agricultura y su posicionamiento en el mercado nacional/internacional” del Convenio 128-FINCyt-IA-2013 cuyo responsable fue al Universidad Peruana Cayetano Heredia (UPCH). Dentro del documento se presenta información agro morfológica, química y sensorial de 50 accesiones de ají nativo, procedentes de la EEA Donoso Huaral, Agro Export Topara de Ica, Ape El Pimental de Ucayali y de Villa Rica en Oxapampa.
Characterisation of volatile profiles in 50 native Peruvian chili pepper using solid phase microextraction–gas chromatography mass spectrometry (SPME–GCMS)
(El Sevier, 2016-08-26) Patel, Kirti; Ruíz, Candy; Calderón, Rosa; Marcelo Salvador, Mavel; Rojas, Rosario
The volatiles were characterised by headspace solid phase micro extraction (HS-SPME), gas chromatography mass spectrometry (GC-FID/MS). A total of 127 compounds were identified with terpenes (including mono terpenes and sesquiterpenes – a total of 45 compounds), esters (31 compounds) and hydrocarbons (20 compounds) were the predominant volatile compounds. Principal component analysis (PCA) of the volatile compounds yielded 2 significant PC's, which together accounted for 90.3% of the total variance in the data set and the scatter plot generated between PC1 and PC2 successfully segregated the 50 chili pepper samples into 7 groups. Clusters of hydrocarbons, esters, terpenes, aldehyde and ketones formed the major determinants of the difference.
Patterns of Plumericin Concentration in Leaves of Himatanthus tarapotensis (Apocynaceae) and Its Interactions with Herbivory in the Peruvian Amazon
(MDPI, 2022-04-08) Amasifuen Guerra, Carlos Alberto; Patel, Kirti; Delprete, Piero G.; Spina, Andréa P.; Grados, Juan; Vásquez Ocmín, Pedro; Gadea, Alice; Rojas, Rosario; Guzmán, Jesús; Sauvain, Michel
We explored the concentration patterns of the bioactive metabolite plumericin produced by Himatanthus tarapotensis (Apocynaceae) under different edaphic conditions and variations in rainfall intensity, as well as its potential role in the chemical defense against insect herbivores. Values of plumericin concentration from leaves were obtained by High-Performance Liquid Chromatography, and evaluated as a function of differences in soil types, variation of precipitation, and variation of the abundance of insect herbivores, using first a Repeated Measures Correlation (rmcorr) and then a Generalized Linear Mixed Model (GLMM) analysis. Plumericin concentration is highly variable among plants, but with a significantly higher concentration in plants growing on clay soil compared to that of the white-sand soil habitat (p < 0.001). Plumericin concentration is not affected by precipitation. The caterpillar of Isognathus leachii (Lepidoptera: Sphingidae) is the most conspicuous herbivore of H. tarapotensis, and its presence is continuous but not related to plumericin concentration, probably because of its capacity to elude the chemical defense of this plant. Nevertheless, our multivariate model revealed that plumericin concentration is related to the abundance of Hymenoptera (Formicidae), and this relationship is significantly influenced by the soil parameters of carbon percentage, clay percentage, and phosphorous percentage (p < 0.001). Plumericin is a mediating agent in the interaction between H. tarapotensis and its natural environment. Variation in plumericin concentration would be induced by the abundance of Hymenoptera (Formicidae), probably as a chemical response against these insects, and by differences in soil nutrient availability.