Effect of different sago starch surface sizing compositions on the properties of paper made from pineapple leaf fiber

Starch is main surface sizing agent. Sizing agent comprised of dispersed natural polymers in an aqueous solution are provided, as well as methods for making these sizing agents and methods for using these sizing agents to size paper. Starch is main surface sizing agent (SSA) of natural polymers. Sago starch was prepared at different ratio of starch with deionized water. The characteristics and properties of the uncoated pineapple paper and SSA coated paper were reported. Different composition of starch ratio not much affected on melting point of sago starch, the melting point is around 90oC. Result showed that, surface sizing agent has pronounced effects in improving strength and water resistance. Increase the ratios of starch were decreased the strength and water resistance. The 1:10 starch ratio only absorbed 0.23g of water for 6 days while 1:25 starch ratio absorbed 0.34g of water for 6 days. Meanwhile, the strength properties were decreased as the starch ratio increases. The 1:10 starch ratio gives highest tear strength (80N) while 1:25 starch ratio (60N) and uncoated pineapple paper only 55N. In conclusion, the 1:10 starch ratio was showed better tear strength and water resistance for pineapple paper

Potential Role of Bromelain in Wound Healing Application: A Review

Bromelain is a type of proteolytic enzymes that extracted from pineapple plant (Ananas comosus). Fruit and stem bromelain can be extracted from pineapple stem and fruit respectively. It can also being obtained from pineapple wastes such as core, crown and peel. Various extraction and purification method such as reverse micellar system, aqueous two-phase system, chromatographic techniques and membrane filtration had been employed to produce high quality bromelain. Bromelain had been clinically known since 1876 and introduced as therapeutic compound in 1957. Due to its safety and showed undesired side effects, bromelain has earned growing acceptance and compliance among patients as phytotherapeutical drug. Bromelain is regarded as one of the nutrient support for wound healing as it contains various closely related proteinases demonstrating anti-inflammatory, fibrinolytic and debridement effects

Potential Role of Bromelain in Wound Healing Application: A Review

Bromelain is a type of proteolytic enzymes that extracted from pineapple plant (Ananas comosus). Fruit and stem bromelain can be extracted from pineapple stem and fruit respectively. It can also being obtained from pineapple wastes such as core, crown and peel. Various extraction and purification method such as reverse micellar system, aqueous two-phase system, chromatographic techniques and membrane filtration had been employed to produce high quality bromelain. Bromelain had been clinically known since 1876 and introduced as therapeutic compound in 1957. Due to its safety and showed undesired side effects, bromelain has earned growing acceptance and compliance among patients as phytotherapeutical drug. Bromelain is regarded as one of the nutrient support for wound healing as it contains various closely related proteinases demonstrating anti-inflammatory, fibrinolytic and debridement effects

The effect of mercerization process on the structural and morphological properties of pineapple leaf fiber (PALF) pulp

Environmental awareness and depletion of the wood resources are among vital factors that motivate various researchers to explore the potential of agro-based crops as an alternative source of fiber material in paper industries such as writing, printing, wrapping, and packaging. Fibers from agro-based crops are available in abundance, low cost, and most importantly its biodegradability features, which sometimes referred as “ecofriendly” materials. This paper attempt to study the effect of mercerization treatment on the structural and morphological properties of pineapple leaf fiber (PALF) pulp. It was shown that the PALF pulp achieved favourable structural and morphological properties as characterized by FTIR spectroscopy, X-ray diffractometer and scanning electron microscope (SEM). The mercerized fibers (15% NaOH) achieved the best tensile properties compared to that of pristine fibers.This modification have the potential to be utilized as pulp for paper based products

A systematic literature review: the effect of date palms (phoenix dactylifera) toward breast cancer MCF-7 cell line.

Breast cancer is most significant diagnosed cancer in women that approximately 2.1 millions women were diagnosed with breast cancer and caused 627,000 deaths worldwide in 2018 based on Press Release 2018 from International Agency for Research on Cancer in World Health Organization (WHO) [1]. Phoenix dactylifera or in common name, date palm has become one of the choices to avoid breast cancer. The various types of extract methods on difference parts of P.dactylifera against breast cancer cell line or known as Michigan Cancer Foundation-7 (MCF-7) were widely discussed in previous research articles. However, it was lack of systematically review on effect of the parts of P.dactylifera against breast cancer or MCF-7. PRISMA method was applied on Scopus and Science Direct databases and resulted on six parts of the P.dactylifera’s extracts. For future direction, it was encouraged to apply different standard systematic review methods and extra databases

Study on morphological properties of polyvinyl alcohol/poly(lactic acid) wound dressing membrane as drug delivery carrier in wound healing treatment

Wound dressing have experienced continuous improvement and changes since ancient time. Electrospinning of polymeric nanofibers have captured the interest of researchers due to its simplicity and cost effective technique that able to produce wound dressing membrane that meet the requirement as ideal wound dressing and drug delivery carrier. In this work, polyvinyl alcohol (PVA) and poly (lactic acid) (PLA) were chosen polymer to produce wound dressing membrane through electrospinning and coating method. PVA was electrospun and then coated with PLA. Preliminary study had been conducted between 1, 4 and 8% concentration for the selection of optimum PLA coating concentration. PLA has been proposed for the use of coating materials at 4%, the coated nanofiber membrane started to exhibit high Ultimate Tensile Strength at 1022.5 ± 9.28 MPa, highest degree of swelling (1850 ± 3.7 %) and optimum water contact angle (60.9 ± 11.46 ̊). The aim of this study was to investigate the morphological properties of PVA/PLA wound dressing membrane. Based on the results from Atomic Force Microscope, PVA nanofiber coated with 4% PLA exhibit the highest value of Rq which is 0.47 ± 0.19 μm compared to neat PVA nanofibers membrane. Field Emission Scanning Electron Microscope (FE-SEM) image revealed that PVA nanofiber coated with 4% PLA shows porous fiber-like morphology and well incorporated with each other without any gap formed between them. This report clearly suggestive of the fact that synthetic biodegradable polymers such as PLA can be exploited for the synergistic combination with PVA nanofiber for wound dressing application

A review on medicinal properties of saffron toward major diseases

The stigma of Crocus sativus, known as saffron, is one of the most expensive spices in the world. The bioactive components in saffron, picrocrocin, crocin, and safranal, have demonstrated a wide range of uses and capabilities in the medical field. This review is focused on the potential therapeutic applications of saffron on diabetes mellitus (DM), antitumor, anticancer, anti-depressant, Alzheimer’s disease (AD), cardiovascular disease (CVD), erectile dysfunction and antibacterial effects

Study on Morphological Properties of Polyvinyl Alcohol/Poly(lactic acid) Wound Dressing Membrane as Drug Delivery Carrier in Wound Healing Treatment

Wound dressing have experienced continuous improvement and changes since ancient time. Electrospinning of polymeric nanofibers have captured the interest of researchers due to its simplicity and cost effective technique that able to produce wound dressing membrane that meet the requirement as ideal wound dressing and drug delivery carrier. In this work, polyvinyl alcohol (PVA) and poly (lactic acid) (PLA) were chosen polymer to produce wound dressing membrane through electrospinning and coating method. PVA was electrospun and then coated with PLA. The aim of this study was to investigate the morphological properties of PVA/PLA wound dressing membrane. Based on the results from Atomic Force Microscope, PVA nanofiber coated with 4% PLA exhibit the highest value of Rq which is 0.47 ± 0.19 μm compared to neat PVA nanofibers membrane. Field Emission Scanning Electron Microscope (FE-SEM) image revealed that PVA nanofiber coated with 4% PLA shows porous fiber-like morphology and well incorporated with each other without any gap formed between them. This report clearly suggestive of the fact that synthetic biodegradable polymers such as PLA can be exploited for the synergistic combination with PVA nanofiber for wound dressing application

Electrospinning, preparation and characterization of polyvinylidene fluoride / pectin electrospun loaded with benzalkonium chloride as a drug reservoirs

Porous nanofiber electrospun of polyvinylidene fluoride (PVDF)/pectin was successfully developed using electrospinning method containing benzalkonium chloride (BAC) as a drug model for the controlled drug delivery system assessment. The electrospun was tested for its mechanical, morphological, and wettability properties. Scanning electron microscope (SEM) micrograph demonstrated that the smooth surfaces of nanofibers morphology had achieved up to 2 wt% pectin inclusion with optimum fiber diameter, 143 ± 1.4 nm. The optimized scaffold PVDF/Pectin showed that the reduction of mechanical integrity and optimum value of tensile strength, modulus strength, and elongation at break were 5.98 ± 0.17 MPa, 16.82 ± 0.10 MPa, and 79.3 ± 1.3% MPa. Water contact angle analysis and degree of swelling suggested that inclusion of pectin had enhanced the wettability properties of hydrophobic PVDF electrospun with highest swelling capacity achieved of 78.9 ± 1.7%. The in vitro drug release tests using BAC, which was released from the hybrid electrospun nanofibers, achieved prolonged release profile due to elimination of the uncontrollable initial burst release. Kinetic release study from Higuchi Model and Korsmeyer-Peppas further validates that the drug release mechanism is only influenced by the diffusion factor. The present study indicates the potential of PVDF/pectin electrospun nanofibers to be exploited as a tool for sustainable drug delivery system

Influence of citric acid on the physical and biomineralization ability of freeze/thaw poly(vinyl alcohol) hydrogel

This work reports the modification of freeze/thaw poly(vinyl alcohol) hydrogel using citric acid as the bioactive molecule for hydroxyapatite formation in simulated body fluid. Inclusion of 1.3 mM citric acid into the poly(vinyl alcohol) hydrogel showed that the mechanical strength, crystalline phase, functional groups and swelling ability were still intact. Adding citric acid at higher concentrations (1.8 and 2.3 mM), however, resulted in physically poor hydrogels. Presence of 1.3 mM of citric acid showed the growth of porous hydroxyapatite crystals on the poly(vinyl alcohol) surface just after one day of immersion in simulated body fluid. Meanwhile, a fully covered apatite layer on the poly(vinyl alcohol) surface plus the evidence of apatite forming within the hydrogel were observed after soaking for seven days. Gel strength of the soaked poly(vinyl alcohol)/citric acid-1.3 mM hydrogel revealed that the load resistance was enhanced compared to that of the neat poly(vinyl alcohol) hydrogel. This facile method of inducing rapid growth of hydroxyapatite on the hydrogel surface as well as within the hydrogel network can be useful for guided bone regenerative materials