1.) Hybrid Vigor of Double Cross Bombyx mori Silkworms
3.) Antibacterial Activity of Knitted Cotton Fabrics Dyed with Natural Dyes
4.) Manually Operated Miniaturized Carding and Fiber Opener
5.) Sericulture Technology Center Misamis Oriental through the Years
5.) Status and Prospects of the Sericulture Industry in the Philippines: PTRI Perspective
Hybrid Vigor of Double Cross Bombyx mori Silkworms
Cheryl G. Lopez , Serenita S. Ompoy, Michael Vincent E. Salon and Ronnie M. Liguan
Abstract
A study was conducted to assess the hybrid vigor of double cross silkworm hybrids namely PTRI SW 2000, 2001, 2002, and 2003. These hybrids came from crossbreeding silkworm inbred parents of Japanese and Chinese races. The study showed that when compared to their parental origins, the improvement of the double cross hybrids was significantly better in terms of larval weight, cocoon size, cocoon weght, and shell weight, filament length, filament weight, and filament size. Moreover, the hybrids satisfactorily met the PTRI requirements for these economic parameters. Among the four, PTRI SW 2001 performed best.
Argentina T. Carino
Abstract
An economical and effective technology on treating buko (Cocos nucifera) dye effluents was developed using commercially available activated carbon produced from reactivated granular coal with a mesh size of 12x40. The activated carbon served as an effective adsorbent to remove and/or reduce the copper (II) content in buko dye effluents obtained from various textile materials. At 5% activated carbon, the copper (II) was effectively removed from the effluents thereby complying with the Department of Environment and Natural Resources Adminstrative Order (DENR AO) 2008 on Water Quality Guidelines and General Effluent Standards stated setting a maximum of 0.02 ppm of copper in the effluents. The pH was correspondingly adjusted to the required standard of 6.5 to 9. The developed treatment method, however, was not suitable in decolorizing the buko dye effluents due to the nature of the colored compounds present in it. The developed technology was found to be effective in terms of material cost, high-adaptability, and biodegradability.
Antibacterial Activity of Knitted Cotton Fabrics Dyed with Natural Dyes
Julius L. Leano Jr , Jenice P. Malabanan , and Jeannie Lynn J. Cabansag
Abstract
Scoured and bleached knitted cotton were pre-mordanted with either copper sulfate (CuSO4.5H2O) or alum (KAISO4.12H2O) solution. Same cotton fabrics were dyed with the crude aqueous extracts from fresh Coleus blumei (mayana) leaves, Swietenia macrophylla King (mahogany) barks, young Cocos nucifera (coconut) husks, fresh Terminalia catappa (Indian almond) leaves, Bixa orellana (annatto) seeds and Tamarindus indica (tamarind) bark. These were extracted using technologies in dye extraction previously established by the Philippine Textile Research Institute (PTRI), while the indigo powder used was obtained from Indigofera tinctoria (indigo) leaves using another PTRI-developed technology. All the dyed fabrics were washed thoroughly then air-dried.
The anti-bacterial activities of the fabrics were evaluated using AATCC Test Method 147-2004 (Parallel Streak Method) using Klebsiella pneumoniae and Staphylococcus aureus. Results indicated that all the dyed fabrics showed activity againts the two bacteria. Further,AATCC Test method 100-2004 using S. aureus revealed reduction of bacterial counts between 69.69%-99.99% confirming anti-bacterial property and the bio-functional activity of naturally-dyed knitted cotton fabrics.
Manually Operated Miniaturized Carding and Fiber Opener
Ronald S. Pechera , Marites De Leon , and Nora B. Mangalindan
Abstract
The invention relates to a simplified manually operated laboratory carding machine which can perform multiple tasks, such as fiber opening and cleaning, at the same time.The machine consists of four wooden cylindrical drums with metal card clothing each concentrically aligned by shaftings to perform carding/cleaning and opening actions on the fibers being fed. The carding motion of the drum cards is synchronized through the chain and sprocket assembly and ralayed by a metal/wood hand crank. The development and adoption of the machine, coupled with an available hand spinning machine can provide significant impetus to the handicrafts and hand weaving industry of the country.
Sericulture Technology Center Misamis Oriental through the Years
Cheryl G. Lopez
Abstract
Sericulture, the growing of silkworms into cocoons, is an ancient activity that can be traced 5,000 years back in China. Its economic importance and fame of its silk products paved the way for its global spread. After a thousand years, it reached the northern areas of the Philippines. When the Philippines Textile Research Institute (PTRI) received the technology and facilities of sericulture, it established two sericulture stations in Benguet and Misamis Oriental which, over a period of time, were strengthened as a silkworm breeding and multiplication center, shortly called Technology Center (TC). Particularly, Misamis Oriental TC has 58 parent breeds in its silkworm germplasm which came in mostly as hybrids and improved through years of acclimatization, segregation, characterization, and purification. The TC's widely distributed four Mindanao hybrids came from the crosses of four improved Mindanao parent lines. In effect, these local hybrids phenomenally solved the increasing silkworm egg needs of cocoon growers in Mindanao that resulted to the escalation of cocoon production. The various trances of technical and financial assistance from foreign and local agencies significantly contributed in the full development of the TC. After more than 30 years, PTRI's focus on sericulture support shifted to Misamis Oriental TC after the defunct of Benguet TC. Prepared for, yet, another transition of management of the TC from PTRI to DOST-10, it keeps itself ready for future pursuits of development.
Status and Prospects of the Sericulture Industry in the Philippines: PTRI Perspective
Roberto O. Casero , Adelfa M. Basaen , and Nora B. Mangalindan
Abstract
The sericulture industry in the Philippines was reviewed with emphasis on the status and prospects of the industry. The paper presented the major accomplishments of PTRI and its significant contributions in the development of sericulture in the Philippines The government support to the industry was also highlighted, focusing on the role of the Department of Science and Technology (DOST) and the Philippine Textile Research Institute (PTRI) which is one of the government agencies mandated to conduct research and development projects for sericulture, render technical services and provide training program. The paper also reflected the investment opportunities and competitive advantage of the industry, its strengths, and constraints.
