DMMMSU External Publications

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Browsing DMMMSU External Publications by Subject "Agricultural machinery"

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    Performance evaluation of a mechanically-aided cocoon deflosser
    (DMMMSU Research and Extension Journal, 2024-12) Macadaeg, Fatima Rodriguez
    Sericulture products such as woven linen and novelty items were already sold at the market at premium-priced commodities. However, it was not given emphasis and sustainable support. One of the problems identified is the availability of cocoon silk production machinery and equipment. Humans can defloss 2 to 3 kg or 900 to 1,600 pieces of cocoon in an hour. Therefore, cocoon delfossing is a tiresome laborious job. This contributes to the market's poor production of silk and novelty items. Hence, a cocoon deflossing machine with a higher deflossing capacity than a manual is needed. To address this concern, a mechanically aided cocoon deflossing machine was designed, fabricated, and evaluated. Performance evaluation of the machine shows that it lessens deflossing cost from USD 0.53 /kg manual deflossing to USD 0.47/kg. It has a capacity of 4.80 kg/hr and 2,374 pieces of cocoons per hour.
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    Residual assessment of metal transfer from selected agricultural machinery to processed commodities
    (Philippine Journal of Agricultural and Biosystems Engineering, 2025-06) Nanali, Mark Romy E.; Fajardo, Arthur L.; Zubia, Omar F.; Gallegos, Ralph Kristoffer B.; Bawar, Rina A.
    Stainless steel, particularly grades such as AISI 304SS and 316SS, is extensively used in food processing due to its excellent corrosion resistance, durability, and ease of cleaning, which are essential for maintaining food safety and hygiene standards. However, the verification of food-grade materials has rarely been evaluated. This study investigated the potential transfer of metal residues from food-grade machines specifically a calamansi juice extractor, and coffee grinder to processed agricultural products such as calamansi juice, and coffee. An X-ray Fluorescence (XRF) analyzer was used to determine the metal composition of the processing equipment. Levels of iron (Atomic Absorption Spectrophotometry, AAS) and lead (Inductively Coupled Plasma-Optical Emission Spectroscopy, ICP-OES) in the processed products were determined. The results showed minimal presence of impurities. Levels of iron and lead in the final products remained below international safety standards, suggesting minimal contribution of processing equipment to metal residue content. By providing empirical data on the material composition of commonly used food-processing equipment, this research contributes to improving regulatory frameworks and guiding manufacturers in selecting appropriate materials. These findings support the development of safer, high-quality food-processing equipment, thereby enhancing food safety practices in the Philippine agricultural sector.