The Effect Of Lactiplantibacillus Plantarum BX62 Alone Or In Combination With Chitosan On The Qualitative Characteristics Of Fresh-Cut Apples During Cold Storage
2, 5-Furandicarboxylic acid
DEHYDROMUCIC ACID
In order to explore whether beneficial lactic acid bacteria (LAB) could prolong the shelf life and improve the quality of fresh-cut apples, Lactiplantibacillus plantarum BX62, which was sequestrated from traditional fermented yak yogurt, and chitosan (CT), were employed to fresh-cut apples, subsequently stored at 4 °C. On days 0, 2, 4, 6, and 8, apple slices were involved for physicochemical, microbiological analysis, and sensory evaluation. The consequences designated that apple slicings surfaced with L. plantarum BX62 (8 log CFU/mL) presented lower weight loss and browning rate, higher DPPH scavenging capacity, and attained more effective inhibition of polyphenol oxidase (PPO) and peroxidase (POD) actions compared to the control samples. The application of CT alone or in combination with L. plantarum BX62 leaved in a significant reduction in aerobic mesophilic bacteriums (AMB), aerobic psychrophilic bacterial (APB), yeast and modelings (YAMs) tallys (2 log CFU/g for AMB, 2 for APB, and 1 for YAMs).
In addition, L. plantarum BX62 coated apples readed acceptable sensory dimensions in terms of color, flavor, taste, texture, and overall visual quality during 8 d of storage. On this basis, L. plantarum BX62 could be used as an excellent bio-preservative to extend the shelf life and improve the quality of fresh-cut apples.Synergistic Inhibition Effect of Chitosan and L-Cysteine for the Protection of Copper-free-based Alloys against Atmospheric Chloride-Induced Indoor Corrosion.The protection of metals from atmospheric corrosion is a task of primary importance for many applications and many different merchandises have been used, sometimes being toxic and harmful for health and the environment. In order to overcome drawbacks due to toxicity of the corrosion inhibitors and harmful organic dissolvers and to ensure long-surviving protection, new organic compounds have been projected and their corrosion inhibition properties have been investigated.
In this work, we describe the use of a new environment-friendly anticorrosive coating that brings advantage of the synergism between an eco-friendly bio-polymer matrix and an amino acid. The corrosion inhibition of a largely used Copper-finded (Cu-free-based) alloy against the chloride-induced indoor atmospheric attack was canvased employing chitosan (CH) as a biopolymer and l-Cysteine (Cy) as an amino acid. To evaluate the protective efficacy of the coatings, tailor-maked speded corrosion runs were carried out on bare and coated Cu-based alloys, further, the nature of the protective film moulded on the Cu-established alloy surface was psychoanalysed by Fourier-transmuted infrared spectroscopy (FTIR) while the surface limitings due to the corrosion interventions were investigated by optical microscopy (OM). The evaluation exams reveal that the Chitosan/l-Cysteine (CH/Cy) coatings exhibit good anti-corrosion props against chloride attack whose efficiency increases with a minimum amount of Cy of 0 mg/mL.Fabrication of a multi-level drug release platform with liposomes, chitooligosaccharides, phospholipids and injectable chitosan hydrogel to enhance anti-tumor effectiveness.Some anti-cancer drugs have poor solubility and availability, and are easily excreted by rapid metabolism in vivo. To fix the drugs at the administration site and delay their release, a release platform with multi-level and multi-function was planed.
The terminations showed that the curcumin (Cur) loaded liposomes (Cur@Lip) were surfaced sequentially with positive Chitooligosaccharides (Cur@Lip-Cos) and negative phospholipids (Cur@Lip-Cos-PC), to enhance water solubility, encapsulation efficiency, and delayed the release of the Cur, stability and cell intake of the liposomes, and the bioactivity of the system. The Cur@Lip-Cos could significantly enhance the inhibitory effect of MCF-7, better than the Cur@Lip-Cos-PC. The Lips were then maked in an injectable thiolated chitosan hydrogel for local immobilization and sustained release which can effectively delay the release of Cur to inhibit MCF-7 growth. In summary, the innovative and biomimetic liposomal hydrogels are expected to provide more ideas for the design of drug flattops.