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Lycopene is a very unstable fat-soluble pigment and is easily oxidized or isomerized during processing and storage. In recent years, microencapsulation has been used to improve the instability of lycopene. The microencapsulated lycopene can reduce the contact with the outside world, avoiding the adverse effects of the external environment, increasing the storage stability of lycopene, and improve its bioavailability in the intestine. The preparation, storage stability and bioavailability of lycopene microcapsules are reviewed in this paper, in order to provide a reference for the application of lycopene microcapsule technology.

To improve the stability of fucoxanthin, fucoxanthin liposomes (L) were prepared by the thinfilm ultrasound method, and fucoxanthin liposomes were modified with sodium alginate and chitosan by an electrostatic deposition method. The release characteristics of fucoxanthin in different types of liposomes with in vitro gastrointestinal simulation were studied. Under the optimum conditions, the results showed that the encapsulation efficiency of prepared liposomes could reach 88.56 ± 1.40% (m/m), with an average particle size of 295.27 ± 7.28 nm, a Zeta potential of -21.53 ± 2.00 mV, a polydispersity index (PDI) of 0.323 ± 0.007 and a loading capacity of 33.3 ± 0.03% (m/m). Compared with L and chitosan modified fucoxanthin liposomes (CH), sodium alginate and chitosan modified fucoxanthin liposomes (SA-CH) exhibited higher storage stability, in vitro bioaccessibility and antioxidant activity after gastrointestinal digestion. Sodium alginate and chitosan co-modified liposomes can be developed as formulations for encapsulation and delivery of functional ingredients, providing a theoretical basis for developing new fucoxanthin series products. [ABSTRACT FROM AUTHOR]