Smart edible coating films based on chitosan and beeswax-pollen grains for the postharvest preservation of Le Conte pear.

Smart edible coating films can be used in food packaging. For this application, they must have good physical and mechanical properties. Herein, chitosan-beeswax based film is used to preserve Le Conte pears postharvest.

Quality assessment of lemon (Citrus aurantifolia, swingle) coated with self-healed multilayer films based on chitosan/carboxymethyl cellulose under cold storage conditions.

The polyelectrolyte multilayer self-healing coating film of chitosan and carboxymethyl cellulose (PEM-SH) tended to maintain high sensory quality and control physiological and pathological decay of lemon fruits under cold storage. The PEM-SH film was characterized by ATR-IR, XRD, X-ray photoelectron spectroscopy, SEM analysis, swelling ratio, self-healing, and mechanical characteristics. The 3-layered film (3L) exhibited the optimum barrier properties; WVP: 3.

Synthesis and antitumor activity of some new xanthotoxin derivatives.

The condensation of 4-amino-9-methoxy psoralene (4-aminoxanthotoxin) with some aromatic aldehydes led to the formation of 4-arylimine xanthotoxin derivatives 2a-h, which were cyclized with mercaptoacetic acid to afford the thiazolidinone derivatives 3a-h. On the other hand, the reaction of aminoxanthotoxin 1 with some anhydrides afforded 4-imidione derivatives 3a-d. When 1 reacted with some isothiocyanates, the thiourea derivatives 5a-c were obtained but the thiourea derivative 6 was obtained when 1 reacted with ammonium thiocyanate.