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Effects of polyunsaturated fatty acid and diacylglycerol on the crystallization behaviors of palm-based oil
No full textDiacylglycerol (DAG) is a novel functional structural lipid, but its application in base oils remains underexplored. This research investigated the effect of three liquid oils (groundnut oil, corn oil, and flaxseed oil), with varying polyunsaturated fatty acid (PUFA) (39.60, 69.50, and 77.65 %) and DAG content (0.00, 40.00, 80.00 %), on the crystallization behaviors of palm-based oil. DAG (40.00 %), obtained through enzymatic glycerolysis and molecular distillation, was found to stabilize the binary system with good compatibility and fine crystal structure. “Liquid” DAG played a dual role: diluting solid lipids, and promoting crystallization. Increasing DAG content led to larger crystalline domain size, while higher PUFA content accelerated crystallization and increased crystal orderliness, though decreasing crystal density. These results demonstrated the clear influence of PUFA and DAG content on palm-based oil crystallization. This knowledge can guide the utilization of different unsaturated DAGs for tailored fat crystallization in food application
Dua pelajar pilih Program Asasi Sains Pertanian UPM sebagai laluan ke arah cita-cita
No full textSERDANG, 11 Julai - Dua pelajar memilih Program Asasi Sains Pertanian sebagai fasa permulaan untuk membina asas kukuh dalam bidang pertanian moden dan sains hayat bagi menggapai cita-cita
UPM terima lawatan PPKI, perkasa ilmu pertanian moden
No full textSERDANG, 2 Julai - Pusat Pertanian Putra (PPP), Universiti Putra Malaysia (UPM) telah menerima kunjungan daripada Program Pendidikan Khas Integrasi (PPKI), SMK Seri Tanjong, Johor baru-baru ini bagi memperkasakan ilmu dan kemahiran pertanian moden
Penerima BYDPA 2025 impi jadi pakar bioteknologi, pacu inovasi makanan untuk negara
No full textSERDANG, 21 Julai – Penerima Biasiswa Yang di-Pertuan Agong (BYDPA) 2025, Tiew Siew Jin, yang juga pelajar Universiti Putra Malaysia (UPM) berhasrat menjadi pakar bioteknologi dan menyumbang kepada pembangunan teknologi makanan berasaskan sumber semula jadi tempatanan memacu inovasi dalam teknologi makanan negara
Magnetic, morphological, optical, and EMI shielding assessment of Ti, Co, Mn, and Ni‑doped barium hexaferrite nanocomposites for X‑band applications
No full textWith the rapid growth of telecommunications, electromagnetic pollution and interference (EMI) have become critical challenges. This study developed barium hexaferrite-based nanocomposites doped with Ti, Co, Mn, and Ni to enhance EMI shielding capabilities. The nanocomposites (BaFe12O19 and the modified BaTiCoMn0.25Ni0.25Fe10O19) were synthesized using mechanical milling and thermal processing. Advanced analytical techniques such as x-ray diffraction, scanning and transmission electron microscopy, and vector network analysis confirmed the successful incorporation of dopants and revealed remarkable improvements. The BaTiCoMn0.25Ni0.25Fe10O19 variant exhibited enhanced magnetic properties with a coercivity of 308.9 Oe and magnetization of 65.9 emu/g, surpassing BaFe12O19. The optical band gap was increased to 2.3 eV, suitable for high-energy applications. The nanocomposite demonstrated superior EMI shielding, achieving a reflection loss of − 25.0 dB at 10.5 GHz and shielding effectiveness up to − 45.0 dB in the X-band (8.0–12.0 GHz), making it highly efficient for advanced EMI shielding in electronics and telecommunications