This study investigates the potential of starch extracted from underutilized agro-industrial resources as non-food-competing raw materials for the development of flexible bioplastics for food packaging applications.St...This study investigates the potential of starch extracted from underutilized agro-industrial resources as non-food-competing raw materials for the development of flexible bioplastics for food packaging applications.Starch was extracted from three biomass sources:rubber cassava(Manihot glaziovii),banana stem,and banana peel from Ambonese banana(Musa acuminata L.).Rubber cassava starch(SRC)exhibited the highest starch yield(50.68±0.28%),significantly surpassing banana stem(SBS,14.20±0.25%)and banana peel(SBP,3.07±0.15%).The amylose contents of SRC,SBS,and SBP were 28.18%,52.80%,and 56.57%,respectively,while their amylopectin contents were 71.83%,47.20%,and 43.43%.FTIR spectra confirmed the absence of cyanogenic groups in SRC,indicating its safety for packaging applications.XRD analysis revealed that PSRC films were predominantly amorphous,while PSBS and PSBP showed higher crystallinity.The enhancement of mechanical properties,specifically PSBS,showed the highest tensile strength at 16.04±0.56 MPa,whereas PSRC demonstrated the highest elongation at break at 23.57±0.40%,which could be attributed to the inherent characteristics of the starch sources.Additionally,PSRC film exhibited the highest transparency at 60.2%,the greatest water solubility at 34.92%,and the lowest water contact angle at 41.58○,confirming its more hydrophilic nature compared to other films.This work highlights the potential of low-cost,sustainable,and non-food agro-industrial starch sources as promising candidates for the development of flexible,eco-friendly bioplastics.展开更多
In the physiological measurement science and the industrial chemical process monitoring,Electrical Impedance Tomography(EIT)as imaging technology has gained interest due to its low cost,noninvasiveness,flexibility to ...In the physiological measurement science and the industrial chemical process monitoring,Electrical Impedance Tomography(EIT)as imaging technology has gained interest due to its low cost,noninvasiveness,flexibility to be customized,and non-radiation to replace the X-Ray,CT-Scan,MRI,and Ultrasonography.EIT is the evolution of Electrical Resistance Tomography(ERT)that has been widely used in the geotechnical field.In EIT,the sensor is mainly in a close boundary attached to the periphery of the human body or pipe/tank.展开更多
An analytical and experimental study of nanofilm aluminum (Al) for ultra-high dynamic range surface plasmon resonance (SPR) biosensor is presented in this article. A thin film of 16 nm Al is proposed for metallic sens...An analytical and experimental study of nanofilm aluminum (Al) for ultra-high dynamic range surface plasmon resonance (SPR) biosensor is presented in this article. A thin film of 16 nm Al is proposed for metallic sensing layer for SPR .s*ensoi For the protective layer, a 10 nm of gold (Au) layer was configured on top of Al as a protection layer. This ultra-high dynamic range of SPR biosensor reached the bulk refractive index sample limit up to 1.45 RIU. For the analytical study, with the assumption of anisotropic refractive indices experiment, the dynamic range showed a refractive index value of around 1.58 RIU. The refractive index value limit achieved by the proposed sensing design is potentially implemented in various applications, such as in chemical detection and environ- mental monitoring study with high refractive index solution sample. The experimental results are presented as a proof-of-concept of the proposed idea.展开更多
基金supported by the RIIM BRIN and LPDP Grants,grant number B-2880/II.7.5/KS.00/4/2025 dan B-7930/III.6/TK.01.03/4/2025 under the scheme BRIN-KONEKSI Joint Call for Proposalsthe theme“Indonesia's Bioeconomy:Maximising Sustainable Marine Biodiversity Utilisation 2024”No 6/II.7/HK/2025.
文摘This study investigates the potential of starch extracted from underutilized agro-industrial resources as non-food-competing raw materials for the development of flexible bioplastics for food packaging applications.Starch was extracted from three biomass sources:rubber cassava(Manihot glaziovii),banana stem,and banana peel from Ambonese banana(Musa acuminata L.).Rubber cassava starch(SRC)exhibited the highest starch yield(50.68±0.28%),significantly surpassing banana stem(SBS,14.20±0.25%)and banana peel(SBP,3.07±0.15%).The amylose contents of SRC,SBS,and SBP were 28.18%,52.80%,and 56.57%,respectively,while their amylopectin contents were 71.83%,47.20%,and 43.43%.FTIR spectra confirmed the absence of cyanogenic groups in SRC,indicating its safety for packaging applications.XRD analysis revealed that PSRC films were predominantly amorphous,while PSBS and PSBP showed higher crystallinity.The enhancement of mechanical properties,specifically PSBS,showed the highest tensile strength at 16.04±0.56 MPa,whereas PSRC demonstrated the highest elongation at break at 23.57±0.40%,which could be attributed to the inherent characteristics of the starch sources.Additionally,PSRC film exhibited the highest transparency at 60.2%,the greatest water solubility at 34.92%,and the lowest water contact angle at 41.58○,confirming its more hydrophilic nature compared to other films.This work highlights the potential of low-cost,sustainable,and non-food agro-industrial starch sources as promising candidates for the development of flexible,eco-friendly bioplastics.
文摘In the physiological measurement science and the industrial chemical process monitoring,Electrical Impedance Tomography(EIT)as imaging technology has gained interest due to its low cost,noninvasiveness,flexibility to be customized,and non-radiation to replace the X-Ray,CT-Scan,MRI,and Ultrasonography.EIT is the evolution of Electrical Resistance Tomography(ERT)that has been widely used in the geotechnical field.In EIT,the sensor is mainly in a close boundary attached to the periphery of the human body or pipe/tank.
基金This research was funded in part by Ministry of Science and Technology(MOST)(Taiwan,China)under the contract number ofMOST 107-2218-E-182-008 and MOST 106-2221-E-182-041,also Chang Gung Memorial Hospital Grant with the contract number of CMRPDG0151.The authors thank the Indonesian Institute of Sciences and Chang Gung University for supporting this research.B.A.P.wholeheartedly thanks Chang Gung University,Taiwan,China for the visiting scholar invitation under the grant number BMRP741.
文摘An analytical and experimental study of nanofilm aluminum (Al) for ultra-high dynamic range surface plasmon resonance (SPR) biosensor is presented in this article. A thin film of 16 nm Al is proposed for metallic sensing layer for SPR .s*ensoi For the protective layer, a 10 nm of gold (Au) layer was configured on top of Al as a protection layer. This ultra-high dynamic range of SPR biosensor reached the bulk refractive index sample limit up to 1.45 RIU. For the analytical study, with the assumption of anisotropic refractive indices experiment, the dynamic range showed a refractive index value of around 1.58 RIU. The refractive index value limit achieved by the proposed sensing design is potentially implemented in various applications, such as in chemical detection and environ- mental monitoring study with high refractive index solution sample. The experimental results are presented as a proof-of-concept of the proposed idea.
