Browsing by Author "Dacayanan, Merlita A."

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    Diversified sericulture products:
    (Journal of Biodiversity and Environmental Sciences (JBES), 2022) Obra, Elizabeth P.; Ancheta, Lilia A.; Dacayanan, Merlita A.; Damasco, Crestilyn N.
    This study explored the production of diversified sericulture products, wine and wine vinegar utilizing mulberry fruits that were analyzed and evaluated. The mulberry fruit wine had sweet, alcohol-like odor while the mulberry wine vinegar had light pungent odor and both possessed dark purple color. The wine’s chemical properties - pH, total acidity, volatile acids, ethanol and methanol were within the Philippine standards so with wine vinegar that included pH, total acidity and ash content except for the total solids attributed to the accumulated impurities which could be corrected through filtration. Sensory evaluation of the wine was described as “Good” in terms of appearance, aftertaste, aroma & bouquet, taste and texture while the wine vinegar was generally “Liked” in terms of appearance, color, texture, flavor, taste and acceptance. It implied that mulberry fruit wine and wine vinegar are potential and viable sericulture diversified products which can be adopted as source of additional income for sericulture farmers along with cocoon production and in sustaining and accelerating the development of sericulture industry.
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    Screening of mulberry varieties for larval growth, cocoon yield, and quality through silkworm rearing
    (Korean Society Of Sericultural Science, 2023) Dacayanan, Merlita A.; Damasco, Crestilyn N.; Libunao, Jarson P.; Sampaga, Mario B.; Galano, Edna A.
    Mulberry (Morus spp.) production is a vital activity in sericulture along with rearing of silkworms (Bombyx mori L.) for silk production. The Sericulture Research and Development Institute (SRDI) conducted a study that evaluated 11 mulberry varieties, including nine newly-evolved mulberry hybrids and two check varieties. These mulberry varieties were fed to silkworm hybrid, DMMMSU 115 x 100. The rearing performance of DMMMSU 115 x 100 was determined based on the silkworm economic traits such as weight of 10 matured larvae, cocoon weight, shell weight, shell percentage, cocoon yield, reelability percentage, filament length and filament size. Six silkworm rearing trials were conducted with 50 silkworm larvae per treatment in three replicates. The data were analyzed in a one-way Analysis of Variance. Significant differences were tested further using Tukey’s Honest Significant Difference. Mulberry varieties that garnered an evaluation index value of higher than 50 were identified and selected. Results of the study revealed significant variations among the mulberry varieties based on the parameters gathered except on the reelability of cocoons, filament length and size. Matured silkworm larvae fed with Alf 55 were significantly heavier and higher cocoon yield compared to those fed with Alfonso and S54. Alf 32, Alf 55, Alf 58, Bat 37 and Bat 73 were identified as potential varieties and highly recommended as feed for the silkworm hybrid, DMMMSU 115 x DMMMSU 100.