scholarly journals Properties of Banana (Cavendish spp.) Starch Film Incorporated with Banana Peel Extract and Its Application

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1406
Author(s):  
Chanitda Taweechat ◽  
Tipapon Wongsooka ◽  
Saroat Rawdkuen
Keyword(s):  
Uv Light ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Water Vapor Permeability ◽  
Thiobarbituric Acid ◽  
Barrier Properties ◽  
Banana Peel ◽  
Vapor Permeability ◽  
Peel Extract

The objective of this study was to develop an active banana starch film (BSF) incorporated with banana peel extract. We compared the film’s properties with commercial wrap film (polyvinyl chloride; PVC). Moreover, a comparison of the quality of minced pork wrapped during refrigerated storage (7 days at ±4 °C) was also performed. The BSF with different concentrations of banana peel extract (0, 1, 3, and 5 (%, w/v)) showed low mechanical properties (tensile strength (TS): 4.43–31.20 MPa and elongation at break (EAB): 9.66–15.63%) and water vapor permeability (3.74–11.0 × 10−10 g mm/sm2 Pa). The BSF showed low film solubility (26–41%), but excellent barrier properties to UV light. The BSF had a thickness range of 0.030–0.047 mm, and color attributes were: L* = 49.6–51.1, a* = 0.21–0.43, b* = 1.26–1.49. The BSF incorporated with banana peel extracts 5 (%, w/v) showed the highest radical scavenging activity (97.9%) and inhibitory activity of E. coli O157: H7. The BSF showed some properties comparable to the commercial PVC wrap film. Changes in qualities of minced pork were determined for 7 days during storage at ±4 °C. It was found that thiobarbituric acid reactive substances (TBARS) of the sample wrapped with the BSF decreased compared to that wrapped with the PVC. The successful inhibition of lipid oxidation in the minced pork was possible with the BSF. The BSF incorporated with banana peel extract could maintain the quality of minced pork in terms of oxidation retardation.

Ultraviolet blocking and antioxidant polyvinyl alcohol films incorporated with baicalin extraction from Scutellaria baicalensis Georgi

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Jinshu Liu ◽  
Xiaoyan Ma ◽  
Wenzhao Shi ◽  
Jianwei Xing ◽  
Chaoqun Ma ◽  
...  
Keyword(s):  
Water Vapor ◽  
Polyvinyl Alcohol ◽  
Radical Scavenging Activity ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Water Vapor Permeability ◽  
Scutellaria Baicalensis ◽  
Vapor Permeability ◽  
Protective Film ◽  
Uv Blocking

Abstract Baicalin, an active flavonoid ingredient of Scutellaria baicalensis Georgi, was extracted by heat reflux extraction and showed the same significance UV absorption property with standard baicalin. Active films were prepared from polyvinyl alcohol (PVA) containing baicalin extract by casting method. The effect of baicalin extracts on the UV-blocking, optical, antioxidant property, water vapor permeability, swelling and mechanical properties of the films were studied. UV–vis transmittance spectra showed that PVA films incorporated with baicalin extract blocked ultraviolet light range from 280–400 nm even with low concentration of baicalin (0.5 wt%) and maintain the high transparency in visible spectrum. The outstanding UV-blocking properties of PVA films incorporated with baicalin extract were also confirmed by Rhodamine B degradation. Baicalin conferred antioxidant properties to PVA films as determined by DPPH radical scavenging activity. Due to the interaction between hydroxy groups of baicalin and PVA molecule, water vapor permeability, swelling and elongation at break of the films were decreased accompanied with the increasing in tensile strength and Young’s modulus. FTIR reveal that the interaction between PVA molecules was significant changed by the introduction of baicalin. These results suggest that PVA film incorporated with baicalin extract can be used for the development of functional protective film.

scholarly journals Biodegradable Alginate Films with ZnO Nanoparticles and Citronella Essential Oil—A Novel Antimicrobial Structure

Pharmaceutics ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1020
Author(s):  
Ludmila Motelica ◽  
Denisa Ficai ◽  
Ovidiu Oprea ◽  
Anton Ficai ◽  
Roxana-Doina Trusca ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Bacillus Cereus ◽  
Shelf Life ◽  
Zno Nanoparticles ◽  
Uv Light ◽  
Water Vapor Permeability ◽  
Barrier Properties ◽  
Vapor Permeability ◽  
Bacterial Strains

The petroleum-based materials could be replaced, at least partially, by biodegradable packaging. Adding antimicrobial activity to the new packaging materials can also help improve the shelf life of food and diminish the spoilage. The objective of this research was to obtain a novel antibacterial packaging, based on alginate as biodegradable polymer. The antibacterial activity was induced to the alginate films by adding various amounts of ZnO nanoparticles loaded with citronella (lemongrass) essential oil (CEO). The obtained films were characterized, and antibacterial activity was tested against two Gram-negative (Escherichia coli and Salmonella Typhi) and two Gram-positive (Bacillus cereus and Staphylococcus aureus) bacterial strains. The results suggest the existence of synergy between antibacterial activities of ZnO and CEO against all tested bacterial strains. The obtained films have a good antibacterial coverage, being efficient against several pathogens, the best results being obtained against Bacillus cereus. In addition, the films presented better UV light barrier properties and lower water vapor permeability (WVP) when compared with a simple alginate film. The preliminary tests indicate that the alginate films with ZnO nanoparticles and CEO can be used to successfully preserve the cheese. Therefore, our research evidences the feasibility of using alginate/ZnO/CEO films as antibacterial packaging for cheese in order to extend its shelf life.

scholarly journals Preparation of Polyelectrolyte Complex Films of Chitosan-Alginate Incorporated by Eugenol and its Potency as an Antioxidant Packaging

2020 ◽  
Vol 9 (2) ◽  
pp. 88-95
Author(s):  
Baiq Amelia Riyandari
Keyword(s):  
Antioxidant Activity ◽  
Polyelectrolyte Complex ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Elongation At Break ◽  
Carboxylate Groups ◽  
Good Percentage

Preparation of PEC chitosan-alginate films incorporated by eugenol has been investigated. Incorporation of eugenol in chitosan-alginate films was conducted by using the different concentration of eugenol including 0.25% 0.5%, and 1% (% w/v). The effect of eugenol incorporation in chitosan-alginate films was investigated through some properties of the films such as tensile strength, elongation at break, transparency value, and water vapor permeability. Meanwhile, the effectiveness of eugenol incorporation as an active compound of the films was investigated from antioxidant activity of chitosan-alginate films incorporated eugenol. Polyelectrolyte complex (PEC) films of chitosan-alginate was occurred through molecular interaction between polycationic groups of chitosan and polyanionic groups of alginate. The formation of chitosan-alginate PEC films was synthesized at pH ± 4.0. Based on FTIR analysis, the ionic interaction between amine groups (–NH3+) and carboxylate groups (–COO¬) formed strongly. Characterization of films also indicated that PEC films of chitosan-alginate incorporated of eugenol was formed. Study showed that PEC chitosan-alginate films had good mechanical properties. Antioxidant activity assay through  fixed reaction time method  using DPPH radical (α,α-difenil-β- pikrilhidrazil) resulted in good percentage of radical scavenging activity (%RSA) from the films. The E3 films which contain 1% eugenol has 55.99% of  RSA value in 96 hours.

Effect of Spice Extracts on the Biochemical, Textural and Sensory Attributes of Pangasius (Pangasianodon hypophthalmus) Chunks during Ice Storage

2017 ◽  
Vol 54 (2) ◽  
pp. 149
Author(s):  
A. Jeyakumari ◽  
Reeshma Roy ◽  
George Ninan ◽  
V. Renuka
Keyword(s):  
Shelf Life ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Thiobarbituric Acid ◽  
Total Phenolic ◽  
Pangasianodon Hypophthalmus ◽  
Treated Sample ◽  
And Control ◽  
Dpph Radical Scavenging

Aqueous extracts of ginger (<em>Zingber officinale</em>), mint (<em>Mentha arvensis</em>) and green chilli (<em>Capsicum annuum</em>) were examined for their antioxidant activity by using DPPH assay and total phenolic assay. Mint extract showed the highest phenolic content (87.33± 2.74 mg phenolics / 100 g) and DPPH Radical scavenging activity (89.61±0.30 %). Effect of spice extracts (20%) on the quality of pangasius fish chunks were evaluated up to 15 days under iced condition. Fish chunks treated with spice extracts had lower total volatile base nitrogen content (TVB-N) than the control. Similar trend was also observed for peroxide (PV) and thiobarbituric acid (TBA) values. Fish chunks treated with ginger and chilly extracts had an improved texture than mint extracts and control. Sensory evaluation revealed that fish chunks had a shelf life up to 9<sup>th</sup>, 12<sup>th</sup> and 15<sup>th</sup> day for control, chilli extract treated, mint and ginger extracts treated sample respectively. Results indicated that the spice extracts could improve the shelf life of pangasius fish chunks at the selected concentration and demonstrated the potential to use as an alternative for synthetic preservatives.

scholarly journals TiO2-KH550 Nanoparticle Reinforced PVA/Xylan Composite Films with Multifunctional Properties

2018 ◽  
Author(s):  
Xinxin Liu ◽  
Xiaofeng Chen ◽  
Junli Ren ◽  
Chunhui Zhang
Keyword(s):  
Tensile Strength ◽  
Water Vapor ◽  
Composite Film ◽  
Oxygen Permeability ◽  
Positive Impact ◽  
Uv Light ◽  
Composite Films ◽  
Water Vapor Permeability ◽  
Barrier Properties ◽  
Vapor Permeability

In order to improve the strength of PVA/xylan composite films and endow them with ultraviolet (UV) shielding ability, TiO2-KH550 nanoparticle was synthesized and added into the PVA/xylan matrix. The TiO2-KH550 nanoparticle dispersed well in the 0.04% sodium hexametaphosphate (SHMP) solution under ultrasonic and stirring treatments. Investigations on the properties of films showed that TiO2-KH550 had the positive impact on improving the strength, moisture and oxygen barrier properties of the composite films. The maximum tensile strength (27.3 MPa), the minimum water vapor permeability (2.75&times;10-11 g&bull;m-1&bull;s-1&bull;Pa-1) and oxygen permeability (4.013 cm3&bull;m-2&bull;24h-1&bull;0.1MPa-1) were obtained under the addition of 1.5% TiO2-KH550. The tensile strength of TiO2-KH550 reinforced composite film was increased by 70% than that of the pure PVA/xylan composite film, and the water vapor and oxygen permeability were decreased by 31% and 41%, respectively. Moreover, the UV transmittance of film at the wavelength of 400 nm was almost zero when adding 1.5~2.5% of TiO2-KH550, which indicated the PVA/xylan composite films were endowed with excellent UV light shielding ability.

Evaluation of antioxidant enzyme content, phenolic content, and antibacterial activity of Commiphora gileadensis grown in Saudi Arabia

2021 ◽  
Vol 19 (4) ◽  
pp. 329-343
Author(s):  
Yaaser Q. Almulaiky ◽  
Ammar AL-Farga
Keyword(s):  
Antibacterial Activity ◽  
Saudi Arabia ◽  
Oral Hygiene ◽  
Leaf Extract ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Scavenging Activity ◽  
Reference Drug ◽  
Wide Range ◽  
Peel Extract

Commiphora gileadensis is commonly used in Saudi Arabia for oral hygiene. A lack of data about its biological activity encouraged us to evaluate the antioxidant and antibacterial activities of its leaf and stem extracts. Ethanol, methanol, acetone and deionized water were tested as extraction solvents. 80% methanol gave the highest extracted concentrations of phenolic and flavonoid substances. The leaf and stem extracts were respectively evaluated for their radical scavenging activity with DPPH (EC50 = 3.39, and 1.06), ABTS (EC50 = 0.690, and 0.55), and peroxide scavenging activity (EC50 = 2.43, and 1.28). GC-MS identified a wide range of compounds that may be responsible for these activities of the results observed. The highest levels of chlorophyll, carotenoids, and lycopene were found in the leaf extract while level of proanthocyanidins was found in the stem peels extract. The peroxidase and catalase activities of stem peel extract were higher than those of the leaf extract. The findings showed that the leaf and stem peel extracts of C. gileadensis exhibited significant antibacterial activity against the test organisms. The minimum inhibitory concentrations for the plant extracts were compared with the standard reference drug Augmentin but the time–kill curves for the C. gileadensis extracts showed that they were less effective than Augmentin. Moreover, the stem peel extract exhibited stronger antibacterial activity than the leaf extract. In conclusion, C. gileadensis can be an important source of natural antioxidants, used as a healthy chewing stick for teeth brushing and oral hygiene purposes.

scholarly journals The Influence of Flaxseed Oil Cake Extract on Oxidative Stability of Microencapsulated Flaxseed Oil in Spray-Dried Powders

Antioxidants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 211
Author(s):  
Emilia Drozłowska ◽  
Artur Bartkowiak ◽  
Paulina Trocer ◽  
Mateusz Kostek ◽  
Alicja Tarnowiecka-Kuca ◽  
...  
Keyword(s):  
Oxidative Stability ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Thiobarbituric Acid ◽  
Flaxseed Oil ◽  
Wall Material ◽  
Oxidative Stabilization ◽  
Color Changes ◽  
Antioxidant Agents ◽  
Spray Dried

The objective of the study was to investigate the application of flaxseed oil cake extract (FOCE) for oxidative stabilization of flaxseed oil in spray-dried emulsions. Two variants of powders with 10% and 20% of flaxseed oil (FO), FOCE, and wall material (maltodextrin and starch Capsul®) were produced by spray-drying process at 180 °C. The oxidative stability of FO was monitored during four weeks of storage at 4 °C by peroxide value (PV) and thiobarbituric acid-reactive substances (TBARS) measurements. Additionally, the fatty acids content (especially changes in α-linolenic acid content), radical scavenging activity, total polyphenolics content, color changes and free amino acids content were evaluated. Obtained results indicated that FOCE could be an adequate antioxidant dedicated for spray-dried emulsions, especially with a high content of FO (20%). These results have important implications for the flaxseed oil encapsulation with natural antioxidant agents obtained from plant-based agro-industrial by product, meeting the goals of circular economy and the idea of zero waste.

scholarly journals Fabrication and characterization of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) modified with nano-montmorillonite biocomposite

e-Polymers ◽  
2020 ◽  
Vol 21 (1) ◽  
pp. 038-046
Author(s):  
Xu Yan ◽  
Wanru Zhou ◽  
Xiaojun Ma ◽  
Binqing Sun
Keyword(s):  
Thermal Stability ◽  
Oxygen Permeability ◽  
Water Vapor Permeability ◽  
Barrier Properties ◽  
Nucleating Agent ◽  
Vapor Permeability ◽  
Casting Method ◽  
Increasing Trend ◽  
Solution Casting Method

Abstract In this study, a poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) modified with nano-montmorillonite biocomposite (MMT/PHBH) was fabricated by solution-casting method. The results showed that the addition of MMT increased the crystallinity and the number of spherulites, which indicated that MMT was an effective nucleating agent for PHBH. The maximum decomposition peak of the biocomposites moved to a high temperature and residue presented an increasing trend. The biocomposites showed the best thermal stability at 1 wt% MMT. Compared with PHBH, 182.5% and 111.2% improvement in elastic modulus and tensile strength were obtained, respectively. Moreover, the oxygen permeability coefficient and the water vapor permeability of MMT/PHBH biocomposites decreased by 43.9% and 6.9%, respectively. It was also found that the simultaneous enhancements on the crystallizing, thermal stability, mechanical, and barrier properties of biocomposites were mainly caused by the formation of intercalated structure between PHBH and MMT.

scholarly journals Antioxidant activity of mandarin (Citrus reticulata) peel

2010 ◽  
pp. 195-203 ◽  
Author(s):  
Vesna Tumbas ◽  
Gordana Cetkovic ◽  
Sonja Djilas ◽  
Jasna Canadanovic-Brunet ◽  
Jelena Vulic ◽  
...  
Keyword(s):  
Radical Scavenging Activity ◽  
Waste Product ◽  
Radical Scavenging ◽  
Natural Antioxidants ◽  
Protective Effects ◽  
Dpph Radical ◽  
Esr Spin Trapping ◽  
Accelerated Storage ◽  
Mandarin Peel ◽  
Peel Extract

Mandarin peel, a waste product coming from juice production, was extracted by conventional extraction with 70% acetone. Content of flavonoids in mandarin peel extract (MPE) was determined by HPLC. Hesperidin was the most dominant flavonoid. Free radical scavenging activity of MPE on stable DPPH radicals and reactive hydroxyl radicals was also evaluated. EC50 value determined in spectrophotometrical DPPH radical assay was 0.179 mg/ml, while this value in ESR spin trapping hydroxyl radical assay was 0.415 mg/ml. Also, MPE showed protective effects in stabilising sunflower oil during accelerated storage. The results indicated that mandarin peel can be a valuable source of natural antioxidants.

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