Hasil untuk "Packaging"

R. Tummala

F. Cosset, Y. Takeuchi, J. Battini et al.

J. Han, J. Floros

Hassan R. S. Abdellatif, Marwa M. Helmy, Heba G. R. Younis

Abstract This study aimed to examine the effectiveness of the extraction of pectin from orange peel waste using hydrochloric acid and citric acid and how they affect the quantity and quality of pectin, as well as the potential uses of the extracted pectin in edible film formulations. Both extraction procedures were used to extract orange peel samples at 80 °C for one hour. The results showed that using hydrochloric acid to extract pectin (HP) achieved slightly better results (15.15%) than using citric acid, CAP (14.44%). Chemical analysis showed that the two methods were quite different: the pectin from hydrochloric acid had more moisture (3.00%) with a higher equivalent weight of 806.45 mg/mol, while the pectin from citric acid had more ash (1.952%) and a lower equivalent weight of 769.23 mg/mol. Both extraction techniques maintained critical functional properties, and esterification values remained within market standards (51.85%). The extracted pectin was effectively used to make edible films, indicating its potential for other valuable applications. The edible films were characterized by mechanical properties, WVP, optical properties, SEM, FTIR, XRD, DPPH, and biodegradability. The citric acid edible films had the highest DPPH and tensile strength, the lowest elongation and WVP, and the highest degradability in soil. So, the citric acid extraction procedure was demonstrated to be environmentally friendly and lower environmental impact. This study provides valuable insights into producing pectin in an environmentally friendly manner for the food and packaging sectors.

Edoardo Zonta, Katherine Giselle Benavides Cabrera, Andrea Dorigato et al.

K. Petersen, P. Nielsen, G. Bertelsen et al.

Syifa Sri Rahmawati, Richa Mardianingrum, Susanti Susanti

Indonesians consume a lot of traditional jamu, including jamu pahitan. However, the hygiene aspect in the production and serving process is often neglected, so it has the potential to be contaminated with Escherichia coli. Using the MPN method, this study analyzed the presence of E. coli in jamu pahitan sold in Singaparna District. A total of 10 samples were tested, taken from jamu vendors who used plastic bottle packaging. The MPN test results showed that all samples contained E. coli with MPN values ranging from 6.0-1100 g/mL. None of the samples met food safety standards based on SNI 7388:2009, because the maximum limit of E. coli in drinks is <3 MPN/mL. The results of Gram staining of bacteria showed that the bacteria found were bacilli, red in color, including Gram-negative bacteria, indicating the presence of E. coli bacteria.

Gabor Zsivanovits, Stoil Zhelyazkov, Petya Sabeva et al.

The food packaging is one of the most important part of the food industry. It concerns being a preservation technology, but it is an important factor in the marketing and logistics too. Nowadays the environment sustainability of packaging concerns the most serious between more and more other features. The ideal food packaging material should keep the food safety and quality, be easy for maintenance, inexpensive, capable for recycling and biodegradable. The most commercial packaging are the polyethylene, polypropylene, polyethylene-terephthalate based composites but they are not suitable for the circular bio economy because they are petroleum based and their waste is not biodegradable. The chitosan maybe a suitable alternative for food packaging because it is derived of the chitin, which is the second most abundant biopolymer on the Earth and its characteristics concerns for versatile application in the food industry. It is commercial, capable to preserve the quality and safety of the food or their components, environment friendly and has healthy benefits. This study is a collection about the application of chitosan based multicomponent packaging materials developed in the projects of the authors collective.

Huanhuan Zhi, Yu Dong

Orchard site and cultivar selection represent critical determinants in maintaining the desirable quality of sweet cherries. This study investigated the effect of production elevation (PE, 117–697 m above sea level [MASL]) on the gaseous compositions, respiration rate, quality parameters, antioxidant properties, and aromatic volatile compounds of three late-maturing cultivars ('Skeena', 'Lapins', and 'Sweetheart') with modified atmosphere packaging after 5 weeks of storage at 0 °C. Results showed that either low (132 and 152 MASL), or high (697 and 640 MASL) PE further reduced O2 concentration and increased CO2 concentration of 'Skeena' and 'Sweetheart' cherries; however, gaseous compositions in 'Lapins' cherries were not affected by PE. Additionally, low respiration rates (RR) were observed in the 'Skeena', 'Lapins', and 'Sweetheart' cherries at 268, 502–688, and 365–518 MASL, respectively. After storage, high soluble solids content, titratable acidity, and sensory score of flavor were observed in 'Skeena', 'Lapins', and 'Sweetheart' cherries at 550, 331–502, and 365 MASL, respectively. Furthermore, the 'Skeena', 'Lapins', and 'Sweetheart' cherries at 268, 331–688, and 518 MASL, respectively, maintained the high antioxidants and antioxidant capacities after packaging and storage. Compared to after packaging and low PE, the 'Skeena', 'Lapins', and 'Sweetheart' cherries at 550–697, 502–688, and 518–640 MASL, respectively, retained more fruity aroma (including acetaldehyde, 3-methyl-3-buten-1-ol, 2-hexen-1-ol, hexanol, and butyl butyrate) after storage. In conclusion, PE at 268–550 and 365–518 MASL was suitable for growing 'Skeena' and 'Sweetheart' cherries, respectively, whereas 'Lapins' cherries demonstrated superior adaptation to > 502 MASL with low RR and high antioxidant properties and flavor retention.

Wilairat Supmak, Suthawan Buchatip, Mantana Opaprakasit et al.

Abstract Poly(D-lactide) with a star-shaped structure (starPDLA) has been synthesized and blended with commercial linear PLLA (l-PLLA) to enhance processability, thermal stability, and mechanical properties via stereocomplexation and incorporation of covalent junctions with compact structure from the star-shaped polymer. The blends, with a starPDLA content of 0.1 and 0.2, showed increased elongation at break by 35–43 times and toughness by 40–47 times compared to l-PLLA, with a slight reduction in tensile strength and modulus. The blends were fabricated into packaging trays by film extrusion and thermoforming. The DSC, FTIR, and XRD results indicated that the tray products initially possessed low crystallinity due to the high cooling rate of the fabrication process. Upon microwave heating, the electromagnetic field interacts with polar functional groups of the chains, generating heat at a slightly higher temperature than the Tg of the materials and triggering chain rearrangement to form favorable stereocomplex structures, enhancing their heat resistance and shape stability. These are suitable for warming foods with low water or oil content, e.g., frozen cooked rice or popcorn. The degradable packaging products have a high potential as a choice for microwavable single-use packaging for foods with low water or oil content.

Pham Van Hau

Over the past sixty years, single-use plastic (SUP) waste has emerged as a critical environmental issue globally, with Vietnam ranking among the top contributors to ocean and landfill pollution. This study aims to evaluate the effectiveness of voluntary SUP packaging reduction initiatives in Vietnam, drawing comparisons with international practices through a rapid evidence review and semi-structured interviews with Vietnamese practitioners. Using Bragge et al.’s (2023) evaluation framework, this study identified eight exemplary initiatives: four promoting reusable packaging (through deposit systems, return programs, and refill schemes) and four recycling efforts (using door-to-door collection, voluntary drop-off points, and incentive schemes) in countries such as the Netherlands, Australia, Spain, and Canada. These international initiatives highlight the effectiveness of consumer incentives, stakeholder collaboration, and digital tracking technologies in facilitating behaviour change. In contrast, semi-structured interviews with five Vietnamese practitioners revealed critical challenges, including insufficient government support, inadequate infrastructure, high costs, and the dominance of plastic packaging options, which complicate the implementation of SUP strategies in Vietnam. However, Vietnamese practitioners also noted enabling factors, such as growing consumer awareness, regional green initiatives, and sustainable branding, community support for SUP alternatives. These findings underscore the importance of tailored interventions in developing contexts, suggesting that Vietnam could benefit from enhanced government infrastructure, financial support, and technology integration to improve SUP outcomes. For practitioners, this study provides actionable insights on leveraging consumer engagement and collaborative frameworks to support sustainable practices. Future research should investigate the long-term effectiveness of such interventions within Vietnam's specific socioeconomic landscape, providing data to inform policy and drive practical improvements in SUP strategies.

Bongkot Hararak, Pawarisa Wijaranakul, Wanwitoo Wanmolee et al.

Murtaza Hasan, Qiang Liu, Ayesha Kanwal et al.

Abstract Biological and green synthesis of nanomaterial is a superior choice over chemical and physical methods due to nanoscale attributes implanted in a green chemistry matrix, have sparked a lot of interest for their potential uses in a variety of sectors. This research investigates the growing relevance of nanocomposites manufactured using ecologically friendly, green technologies. The transition to green synthesis correlates with the worldwide drive for environmentally sound procedures, limiting the use of traditional harsh synthetic techniques. Herein, manganese was decorated on ZnO NPs via reducing agent of Withania-extract and confirmed by UV-spectrophotometry with highest peak at 1:2 ratio precursors, and having lower bandgap energy (3.3 eV). XRD showed the sharp peaks and confirms the formation of nanoparticles, having particle size in range of 11–14 nm. SEM confirmed amorphous tetragonal structure while EDX spectroscopy showed the presence of Zn and Mn in all composition. Green synthesized Mn-decorated ZnO-NPs screened against bacterial strains and exhibited excellent antimicrobial activities against gram-negative and gram-positive bacteria. To check further, applicability of synthesized Mn-decorated Zn nanocomposites, their photocatalytic activity against toxic water pollutants (methylene blue (MB) dye) were also investigated and results showed that 53.8% degradation of MB was done successfully. Furthermore, the installation of green chemistry in synthesizing nanocomposites by using plant extract matrix optimizes antibacterial characteristics, antioxidant and biodegradability, helping to build sustainable green Mn decorated ZnO nanomaterial. This work, explains how biologically friendly Mn-doped ZnO nanocomposites can help reduce the environmental impact of traditional packaging materials. Based on these findings, it was determined that nanocomposites derived from biological resources should be produced on a wide scale to eradicate environmental and water contaminants through degradation.

R. Tummala

V. Coma

J. Aharony, J. Aharony, Chi-Wen Jevons Lee et al.

Gaurav Kale, T. Kijchavengkul, R. Auras et al.

Dian Wahyu Wardani, Andriati Ningrum, Manikharda et al.

The protein hydrolysate that contains bioactive peptides of yellowfin tuna (Thunnus albacares) skin collagen with antioxidant activity has been successfully studied by using in silico and in vitro assays. We found that using the in silico assessment, the antioxidant peptides can be found from the precursor (type I α1 and α2 collagen of yellowfin tuna). Applying papain as a protease will also provide the greatest degree of hydrolysis for antioxidative peptides. The highest peptide rank peptides sequence such as Pro-Trp-Gly (PWG), Pro-His-Gly (PHG), His-Leu (HL), Ile-Arg (IR), Ala-His (AH), Glu-Leu (EL) that predicted using papain in silico. Molecular docking analysis showed all peptides derived from yellowfin tuna have hindered the substrate to access the active site of myeloperoxidase (MPO). Interestingly, the substitution of the amino acid from His (PHG, 7.1 kcal/mol) to Trp (PWG, 8.0 kcal/mol) has increased the affinity of the peptide towards MPO. They have antioxidative activities used in silico approach to MPO enzyme. We also confirm the in vitro assays for the protein hydrolysate after proteolysis using papain. The concentration and hydrolysis time will give influence the degree of hydrolysis, and antioxidant activities (P < 0.05). In conclusion, hydrolysate protein of type I α1 and α2 collagen from yellowfin tuna produced by papain hydrolysis has the potential to be used in food, active packaging material until health applications..

M. Suffo, J.F. Molina-Pérez, F. Lloret

One of the most efficient measures to prevent gamma radiation is shielding, which can take the form of protection barriers, storage containers, wall coating, bunkers, or many others aimed at minimizing the exposure of people to radiation. The materials used to this end have not changed much since the invention of X-rays, when materials with high attenuation capacity were employed, such as lead, tungsten, or concrete. These are all high-density materials and, therefore, also very heavy, and some of them are expensive and not environmentally friendly, as they do not have many possibilities with regards to their recycling. Circular economy provides an opportunity to reintroduce subproducts and waste in the same production processes that generated them or as raw matters in others. The use of sustainable materials is one of these options; however, there is little research in the field of radiation protection about the use of recycled material to this end, and there are few alternative sustainable options different from conventional materials that show similar behaviour. In our study, we have designed and built shielded panels called Mixlead® for gammagraphy, made of 100 % recyclable materials with sandwich structures combining polymeric fractions of electric cables and lead-alloy protection sheets used in the packaging of radiographic plates. With a methodology combining shielding calculations and a series of thermomechanical-radiological tests, it was possible to accurately determine the thickness of Mixlead® necessary to perform the tests with security guarantees and meeting sustainability requirements for radioactive sources of Iridium (192Ir) and Selenium (75Se), the use of the former being predominant, with an average activity of 1 GBq. In order to reduce this activity 2 and 10 times, the necessary thickness would be 24 and 79 mm respectively, which represents 3 or 4 layers of Mixlead® material.

Manal, A. Sorour, Ashraf, A. Anwar, Omnia, E Salama

The most crucial factors to consider when creating soybean milk, a device for transferring heat between two fluids, are the heating conditions. The field of thermal engineering is particularly active when it comes to heat exchanger design optimization. Using performance data on the use of cooling soybean milk with chilled water, an optimum channel flow velocity and an ideal number of plates were determined. To determine the optimum channel flow velocity and plate count, performance data on the use of cooling soybean milk with cold water were used. Using a Brookfield rheometer, the apparent viscosity of soybean milk was determined on both the hot and cold sides. Additionally, the annual cost, purchase cost, and fixed cost were calculated. Pressure drops and Reynolds numbers for fluids were computed. For an annual production rate of 43797.65 m3/year, it was discovered that the minimum flow velocity is 2.25 m/s, the ideal number of plates is 17, and the minimal total yearly cost is 35000 L.E./year.