Results 21 to 30 of about 573 (166)

EVALUATION OF COMBINED PROCESSES: CHITIN PURIFICATION FROM SHRIMP (Penaeus sp) AND GRASSHOPPER (Sphenarium purpurascens) EXOSKELETONS

open access: yesTropical and Subtropical Agroecosystems, 2022
Background. Chitin is found in high concentration in insects, this being a new source of exploitation, due to the similarity in the content of chitin in exoskeletons of crustaceans compared to insects, especially those considered pests.
Adolfo Amador Mendoza   +6 more
doaj   +1 more source

Genetic characterization of the microbiota of artisan fresh cheese from the Papaloapan region

open access: yesMexican Journal of Biotechnology, 2021
The population of the Papaloapan region consume artisan fresh cheeses and no pathogen outbreaks have been reported recently. The microbiota is responsible to develop desirable characteristics of cheeses and undesirable characteristics due to the presence of certain pathogens microorganisms.
Miguel A. García-Muñoz   +4 more
openaire   +1 more source

The paradoxical availability of raw materials in the bioethanol production

open access: yesTecnociencia Chihuahua, 2023
The production of bioethanol is influenced by economic, social, political, and technological aspects. Technology has contributed to improving and simplifying the production process.
Cirilo Nolasco Hipólito   +7 more
doaj   +1 more source

Extracción y caracterización de quitosano a partir de placas dérmicas del pez diablo (Hypostomus plecostomus)

open access: yesEcosistemas y Recursos Agropecuarios
El pez diablo (Hypostomus plecostomus) es una especie exótica invasora perfecta por su increíble capacidad de adaptación y el significativo daño ecológico que provoca en los en los mantos acuíferos.
Adolfo Amador-Mendoza   +5 more
doaj   +1 more source

Fingerprint analysis of FTIR spectra of polymers containing vinyl acetate

open access: yesDyna, 2019
The analysis of materials using Fourier transform infrared (FTIR) spectroscopy has a unique area called the fingerprint region for each compound. However, this area is almost never discussed because of its complexity due to the large number of signals ...
Aurelio Ramírez-Hernández   +2 more
doaj   +1 more source

Estimación de las frecuencias alélicas y genotípicas de los genes CAPN1 Y CAST asociados a la calidad de la carne en bovinos de la Cuenca del Papaloapan

open access: yesNova Scientia, 2017
El ganado de doble propósito es aquel utilizado para producir carne y leche. Generalmente es el producto del cruce de razas de origen Cebú x europeas y/o Criollo.
Carmen Monserrat Desgarennes Alcalá   +5 more
doaj   +1 more source

Effect of conjugated linoleic acid on embryo quality in New Zealand rabbits

open access: yesWorld Rabbit Science
One of the main challenges in commercial rabbit production is the high nutritional demands in primiparous females, which, together with their limited intake capacity, reduces their body fat stores and could be partly responsible for their low ...
Amada Isabel Osorio-Terán   +4 more
doaj   +1 more source

Effect of Chitosan-Poly(Acrylic Acid) Complexes and Two Nutrient Solutions on the Growth and Yield of Two Habanero Pepper Cultivars

open access: yesHorticulturae, 2022
Chitosan (CS) is a natural polymer used in agriculture as a biostimulant that has been evaluated in different plant models. In this study, we evaluated the effect of the foliar application of chitosan–poly(acrylic acid) complexes (CS–PAA) and two ...
Rogelio Enrique Palacios-Torres   +8 more
doaj   +1 more source

Mexican Freshwater Fish: Identifying Conservation Priorities and High‐Risk Areas for Fisheries Under Climate Change

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 5, May 2026.
ABSTRACT Freshwater fish are essential components of aquatic ecosystems, providing key ecological functions and supporting livelihoods. Climate change poses a significant threat to freshwater biodiversity; consequently, both its conservation and the food security it sustains may be at risk.
Rafael Sebastián Muratalla‐Miranda   +3 more
wiley   +1 more source

Modification of Rubber Tree Latex With p‐Toluenesulfonic Acid and Its Chemical Combination With Cassava Starch for the Production of Films

open access: yesAdvances in Polymer Technology, Volume 2026, Issue 1, 2026.
Epoxidized natural rubber (ENR) was synthesized from rubber trees via p‐toluenesulfonic acid and latex and characterized by different instrumental techniques. In the analysis of the FTIR spectra of ENR, the vibrational signal of the epoxide group at 815 cm−1 was observed.
Jair Alexsander García-Ramón   +9 more
wiley   +1 more source

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