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Ayon-Reyna, Lidia Elena,Lopez-Valenzuela, Jose Angel,Delgado-Vargas, Francisco,Lopez-Lopez, Martha Edith,Molina-Corral, Francisco Javier,Carrillo-Lopez, Armando,Vega-Garcia, Misael Odin The Korean Society of Plant Pathology 2017 Plant Pathology Journal Vol.33 No.6
Anthracnose of papaya fruit caused by the fungus Colletotrichum gloeosporioides is one of the most economically important postharvest diseases. Hot water immersion (HW) and calcium chloride (Ca) treatments have been used to control papaya postharvest diseases; however, the effect of the combination HW-Ca on the pathogen growth and the development of the disease in infected papaya fruit has been scarcely studied. The aim of this study was to evaluate the effect of the HW-Ca treatment on the in vitro growth of C. gloesporioides conidia and the quality of infected papaya. In vitro, the HW-Ca treated conidia showed reduced mycelial growth and germination. In vivo, the HW-Ca treatment of infected papaya delayed for 5 days the onset of the anthracnose symptoms and improved the papaya postharvest quality. The combined treatment HW-Ca was better than any of the individual treatments to inhibit the in vitro development of C. gloeosporioides and to reduce the negative effects of papaya anthracnose.
Gonzalez-Cabrera Jaime,Moreno-Carrillo Gabriel,Lopez-Juarez Alejandro A.,Anguiano-Amezcua Juan A.,Sanchez-Gonzalez Jorge A.,Mendoza-Ceballos Mario Y.,Arredondo-Bernal Hugo C. 한국응용곤충학회 2023 Journal of Asia-Pacific Entomology Vol.26 No.2
Two colonies of the parasitoid Trichopria drosophilae (Perkins) (Hymenoptera: Diapriidae) are reproduced using a mass rearing approach in Mexico. The first colony uses the worldwide commercial host Drosophila melanogaster Meigen (Diptera: Drosophilidae) reared on an artificial diet (=T. drosophilae-Dm), while the second colony uses D. suzukii Matsumura reared on fresh banana (=T. drosophilae-Ds). Since theoretically the type of colony host affects parasitoid field performance, we conducted concatenated laboratory and field studies of both parasitoid lines. In the laboratory trials, T. drosophilae-Ds exhibited greater longevity, larger adult size, and higher fecundity than T. drosophilae-Dm. Both lines of parasitoids oviposited indistinctly in three drosophilid species commonly found in the berry zones of Colima: D. melanogaster, D. suzukii, and Zaprionus indianus Gupta. In the field trials, T. drosophilae-Ds had a larger population size and provided 2.4-fold higher pest reduction compared to T. drosophilae-Dm. Under the particular conditions of these field trials (berry fields separate from each other ≤ 3 km, and intensive agronomic management), these results demonstrate that T. drosophilae-Ds can significantly contribute more to the integrated management of D. suzukii than when reared on the commercial host D. melanogaster.
Orozco, Daniela,Alarcon-Rojo, Alma Delia,Chavez-Mendoza, Celia,Luna, Lorena,Carrillo-Lopez, Luis Manuel,Ronquillo, Oswaldo Asian Australasian Association of Animal Productio 2021 Animal Bioscience Vol.34 No.10
Objective: A study was conducted to determine the physicochemical quality and consumer acceptability of beef frankfurter-type sausages formulated with pecan nut paste and Mexican oregano oil (MO) of two varieties, Poliomintha longiflora Gray (Mexican oregano Poliomintha, MOP) or Lippia berlandieri (Mexican oregano Lippia, MOL). Methods: Frankfurters were processed under six treatment conditions: control (10.67% pork fat), MOP (control + 0.01% MOP), MOL (control + 0.01% MOL), MOP-N (control + 0.01% MOP + 6% pecan nut paste), MOL-N (control + 0.01% MOL + 6% pecan nut paste), and C-N (control + 6% pecan nut paste). The physicochemical properties and the consumer acceptability were determined. Results: The addition of MO and nut did not influence the water holding capacity, drip loss, and luminosity of frankfurters, but those ingredients increased pH and shear force (p<0.05) and decreased redness (p<0.05) of frankfurters. Frankfurters were generally well accepted by consumers. However, general acceptability of sausages decreased with the addition of MO. Control sausages showed the highest acceptability. Conclusion: The MO and pecan nut paste do not affect drastically the quality of frankfurters. These results provide evidence that partial replacement of pork fat by pecan nut in frankfurters maintain a consistent physicochemical quality and its commercialization looks promising given consumers' acceptance.