Advancements in nano bio sensors for food quality and safety assurance – a review

Potravinarstvo Slovak Journal of Food Sciences, Journal Year: 2023, Volume and Issue: 17, P. 728 - 747

Published: Sept. 12, 2023

Nano-biosensors are rising as a promising technology for ensuring the protection and high-quality of meals merchandise. They offer excessive sensitivity, selectivity, speedy reaction, making them ideal detecting contaminants, pathogens, first-rate signs in samples. This up to date evaluate affords complete evaluation recent improvements nano-biosensor great safety warranty. The covers essential standards kinds nano-biosensors typically utilized evaluation, exploring various nanomaterials their unique homes sensing talents. It also discusses mixing with biological reputation elements, antibodies, enzymes, DNA aptamers enhance sensor performance. software chemical which includes pesticides, heavy metals, mycotoxins, is drastically protected. Nanomaterials allow ultrasensitive detection these even at trace stages, compliance meal products. review explores usage rapid identification quantification foodborne such microorganisms, viruses, parasites, allowing on-web page pathogen timely interventions prevent outbreaks. Additionally, highlights tracking satisfactory using nano-biosensors, including freshness, spoilage, dietary composition. Accurate assessment those parameters offers treasured information manage predict shelf-life. Overall, advancements generation maintain promise integrity products, defensive public fitness, assembly regulatory standards.

Language: Английский

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Synthesis of Poly(ethylene furanoate) Based Nanocomposites by In Situ Polymerization with Enhanced Antibacterial Properties for Food Packaging Applications

Polymers, Journal Year: 2023, Volume and Issue: 15(23), P. 4502 - 4502

Published: Nov. 23, 2023

Poly(ethylene 2,5-furandicarboxylate) (PEF)-based nanocomposites containing Ce–bioglass, ZnO, and ZrO2 nanoparticles were synthesized via in situ polymerization, targeting food packaging applications. The thoroughly characterized, combining a range of techniques. successful polymerization was confirmed using attenuated total reflectance Fourier-transform infrared (ATR-FTIR) spectroscopy, the molecular weight values determined indirectly by applying intrinsic viscosity measurements. nanocomposites’ structure investigated depth profiling time-of-flight secondary ion mass spectrometry (ToF-SIMS), while color measurements showed low-to-moderate increase concentration all compared to neat PEF. thermal properties crystallinity behavior materials also examined. PEF PEF-based show crystalline fraction 0–5%, annealed samples both exhibit above 20%. Furthermore, scanning electron microscopy (SEM) micrographs revealed that active agent are well dispersed matrix. Contact angle incorporating into matrix significantly reduces wetting due increased roughness introduction polar -OH groups. Antimicrobial studies indicated significant inhibition bacterial strains about 9–22% for Gram-positive 5–16% Gram-negative nanocomposite films, respectively. Finally, nanoindentation tests ZnO-based exhibits improved hardness elastic modulus

Language: Английский

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Production of low-cost lactic acid from dairy wastes and dates wastewater and bioactive silver-poly (lactic acid) nanocomposite for biological applications

BioResources, Journal Year: 2024, Volume and Issue: 19(3), P. 5632 - 5653

Published: July 2, 2024

L-Lactic acid-producing Lactobacillus lactis and L. plantarum were isolated from date wastes. The fermentation process was optimized using a one-variable-at-a-time approach. Dairy wastewater the industry utilized as low-cost culture media to produce lactic acid. selected two bacterial strains co-cultured in medium L-lactic acid D-lactic Lactic production significantly improved by glucose (carbon source), yeast extract (nitrogen initial inoculum level, polysorbate 80. A central composite design response surface methodology used optimize variables their levels improve yield. supplemented extract, glucose, 80 predicted for maximum (67.5 g/L), (10.28 (0.48 mL/L). prepared nanocomposites exhibited antibacterial activity against foodborne pathogens. structural properties of silver-polylactic nano compost materials determined. characterized peak absorption wavelength 430 nm. silver poly(lactic acid) X-ray diffraction analysis 30 50 nm size.

Language: Английский

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Yenilebilir Nanokompozit Kaplama Uygulamalarının Albion Çilek Meyvelerinin Soğukta Muhafazasına Etkisi

Erciyes Tarım ve Hayvan Bilimleri Dergisi, Journal Year: 2024, Volume and Issue: unknown, P. 101 - 110

Published: Oct. 23, 2024

Çilek meyvelerinin hasattan sonraki en büyük sorunlardan biri derim sonrası ömürlerinin kısa oluşudur. Bu gerçekten hareketle planlanan bu çalışmada, kitosan mikropartikülü (KMP) ve selenyum (SeMP) ile kekik esansiyel yağı (Yağ) kombinasyonlarından oluşturulan yeni nesil aktif gıda koruyucu kaplama ajanlarının Albion çilek çeşidine ait meyvelerin kalitesi üzerine etkileri araştırılmıştır. Meyveler yenilebilir kolloid solüsyonla kaplandıktan sonra 4 oC’de tutulmuş 0, 5, 10, 15 20. günlerde kalite parametrelerine yönelik analizler yapılmıştır. Çalışma sonucunda uygulamalarından KMP+SeMP uygulaması bunu takiben KMP+SeMP+Yağ uygulamasının ağırlık kaybı, solunum çürüme oranlarını azalttığı, renk değerleri (L*, chroma hue), meyve eti sertliği, suda çözünür kuru madde (SÇKM) miktarı, titre edilebilir asit (TEA) C vitamini içerikleri toplam fenolik, antosiyanin antioksidan kapasitesini korumada etkili uygulamalar olduğu tespit edilmiştir. sonuçlar uygulamalarını kalitesinin korunmasında raf ömrünün uzatılmasında kullanılabilecek kaplamalar olabileceğini göstermektedir. sonuçları çabuk bozulan ürünlerde teknoloji üretilen mikro boyutlu kompozit ajan/ajanlarının elde edilme sürecine katkı sağlayacaktır. Ayrıca gelecekte benzer konularda yapılması olası çalışmalara ışık tutma amacıyla kullanılabileceği söylenebilir.

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Heat‐Treatment and Water Immersion Effect on the Mechanical Properties and Joint Strength of 3D‐Printed Polylactic Acid Parts

Polymers for Advanced Technologies, Journal Year: 2024, Volume and Issue: 35(11)

Published: Oct. 30, 2024

ABSTRACT This paper investigates the effect of short‐time water immersion (WI) and heat‐treatment (HT) post‐processes on mechanical properties joint strength printed polylactic acid (PLA) parts with various raster angles. Using these post‐processing methods to enhance PLA could be deemed as novelty contribution current study. The WI HT tensile test specimens adherends bonded joints were carried out at 21°C 90°C, respectively. Depending angle, heat‐treated was about 11%–43% higher than that untreated specimens. Interestingly, it found had a more significant HT. In case WI, increased by 27%–57% compared Joint tests revealed exerted similar positive joints. findings highlighted is least effective in increasing strengths 3D‐printed parts.

Language: Английский

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