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- Publications by researchers, faculty members, staff, and students of DMMMSU.
- A "lakasa" (storage) for the information materials related to La Union, Ilokano, and Iloko.
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Recent Submissions
Spatial analysis of cadmium and lead occurrence in guso (Eucheuma cottonii) seaweeds in Balaoan, La Union, Philippines
(Don Mariano Marcos Memorial State University- North La Union Campus, 2024-07) Porlit, Mark Brian N.
Seaweeds are a good source of natural vitamins, minerals, and plant-based
nutrients. Heavy metals such as Cadmium and Lead are some of the contaminants that can be found in seaweeds.
This study aimed to determine the amount of cadmium and lead present in Eucheuma seaweed found in the shoreline of Almeida and Paraoir Balaoan, La Union.
Seawater parameters were also gathered to perform correlation analysis to determine
their relationship to the cadmium content of seaweeds.
Results of the study showed that the cadmium content of cultured seaweed is not
significantly different from wild seaweed. Moreover, the lead contents of seaweed were the same for the two varieties. On the other hand, the relationship of cadmium content of seaweeds to pH and salinity level of seawater in wild areas had strong and weak negative relationships, respectively. The relationship between cadmium and pH in the cultured area was moderately negative.
Design, fabrication, and performance evaluation of sugarcane (Saccharum officinarum L.) juice crystallizer for muscovado production
(Don Mariano Marcos Memorial State University- North La Union Campus, 2024-05) Gaon, Louise Jane D.; Mago, Anna Mae N.; Pascua, Joshua B.
Muscovado sugar is a non-centrifugal sugar made by evaporating fresh sugarcane juice until it crystallizes into dark, coarse, and moist sugar with a strong molasses flavor.
This study aimed to design, fabricate, and evaluate the performance of a sugarcane juice crystallizer for muscovado production, as well as perform a cost and return analysis.
Input materials were 50 liters of sugarcane juice and 70 grams of lime.
This study used a Completely Randomized Design to test treatments involving
different agitation speeds: 40 rpm, 50 rpm, and 60 rpm. Each treatment was replicated three times. Analysis of Variance was used to analyze the collected data.
The results indicated that there was no significant difference in cooking recovery between Treatments 1 and 2, and in cooking rate between Treatments 2 and 3. In terms of output capacity, findings showed no significant difference among all treatments. Finally,
all treatments were economically feasible.
Design, fabrication, and performance evaluation of electric-powered pasteurizer for oyster mushroom (Pleurotus Ostreatus) fruiting bags
(Don Mariano Marcos Memorial State University- North La Union Campus, 2024-05) Acosta, Herbert G.; Piol, Denzel Adam A.
Pasteurization of mushroom fruiting bags (MFB) is very crucial in the mushroom cultivation. As a solution for problems in traditional method such as high convective loss and fuel demanding, an electric-powered pasteurizer for mushroom fruiting bags was constructed.
The study was conducted to design, fabricate, and evaluate electric-powered
pasteurizer for Oyster MFB, and perform a simple cost analysis of the machine. Three pasteurizing temperatures were utilized: 60˚C, 70˚C, and 80˚C and three weight of MFB were used: 800g, 900g, and 1000g. Ninety MFB composed of 30 each in every weight of mushroom fruiting bags were used as test materials.
The highest machine efficiency was attained at 80˚C with 92.22% with the machine capacity of 90 MFB per batch for five hours. Furthermore, at this temperature, the BEP is 3604 pcs/year, with a PP of 13 productive working days and Benefit Cost Ratio of 1.08.
Design, fabrication, and performance evaluation of dual-powered fish dryer
(Don Mariano Marcos Memorial State University- North La Union Campus, 2024-05) Ardaniel, Ellah Marie A.; Cortado, Jerish Mae G.; Eisma, Zarlin Jo B.
For fish commodities, traditional sun drying is a relatively low-cost method of
preserving. However, it is weather-dependent and can cause degradation in the quality of dried products. As a solution, a dual-powered fish dryer to maintain the quality of dried products, and control factors affecting the process was developed.
The study was conducted to design, fabricate, and evaluate a dual-powered fish dryer, and perform a simple cost analysis of the machine. Three drying temperatures were utilized to evaluate the performance of the dryer: 50°C, 60°C, and 70°C. Three (3) kg of deboned fish were used as test material for each trial.
The highest drying capacity and efficiency were attained at 70°C with 495.61
grams/hour and 88.89%, respectively. Furthermore, at this temperature, the Breakeven Point (BEP) is 95.47 kg/year, with a Payback Period (PBP) of 1.06 years, and BenefitCost Ratio (BCR) of 1.17.
Design, fabrication, and performance evaluation of hammer-type sea salt crushing machine
(Don Mariano Marcos Memorial State University- North La Union Campus, 2024-05) Labiano, Edreigne Kaye M.; Gacula, Olga Pryanka S.
The study aimed to design, fabricate, and evaluate the performance of hammer type sea salt crushing machine. The performance of the machine is evaluated in terms of crushing efficiency, crushing capacity, and fineness modulus.
The experimental research design was employed in the study. The treatments used were three rotational speed levels of hammer blade at 1026 rpm, 924rpm, and 817 rpm.
The three treatments are replicated 3 times having a total of 27 experimental units. The data gathered were analyzed using Analysis of Variance in Completely Randomized Resign to test the significant difference among the treatments.
Results revealed that there are no significant differences among the three
treatments in terms of crushing efficiency and crushing capacity. In crushing efficiency, Treatment 3 has the highest efficiency of 95.85. Moreover, in terms of crushing capacity, Treatment 1 has the largest capacity of 405.01 kg/hour. Meanwhile, in terms of fineness modulus, Treatment 2 has the fineness modulus of 2.45.