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[EN] Food waste is one of the main issues for international organisms. It is not only an ethical and economic issue but it also depletes the environment of limited natural resources. Among strategies suitable for fighting such challenge, intelligent packaging is an interesting tool to reduce waste derived from households and retailers. A revision of 45 recent advances in the area of optical systems for freshness monitoring is reported herein. The study covers fruits, vegetables, fish products and meat since they are the most representative fields of application. Furthermore, a discussion about the main research challenges and opportunities that will be faced by intelligent packaging in the coming years is included. (C) 2017 Elsevier Ltd. All rights reserved. ; The authors thank financial support from the Spanish Government (project MAT2015-64139-C4-1-R) and the Generalitat Valenciana (project (Project PROMETEOII/2014/047). ; Poyatos-Racionero, E.; Ros-Lis, JV.; Vivancos, J.; Martínez-Máñez, R. (2018). Recent advances on intelligent packaging as tools to reduce food waste. Journal of Cleaner Production. 172:3398-3409. https://doi.org/10.1016/j.jclepro.2017.11.075 ; S ; 3398 ; 3409 ; 172

[EN] In recent decades, the versatility of mesoporous silica particles and their relevance to develop controlled release systems have been demonstrated. Within them, gated materials able to modulate payload delivery represent great advantages. However, the role played by the porous matrix in this kind of systems is scarce. In this work, different mesoporous silica materials (MCM-41, MCM-48, SBA-15 and UVM-7) are functionalized with oleic acid as a molecular gate. All systems are fully characterized and their ability to confine the entrapped cargo and release it in the presence of bile salts is validated with release assays and in vitro digestion experiments. The cargo release profile of each synthesized support is studied, paying attention to the inorganic scaffold. Obtained release profiles fit to Korsmeyer-Peppas model, which explains the differences among the studied supports. Based on the results, UVM-7 material was the most appropriate system for duodenal delivery and was tested in an in vivo model of the Wistar rat. Payload confinement and its complete release after gastric emptying is achieved, establishing the possible use of mesoporous silica particles as protection and direct release agents into the duodenum and, hence, demonstrating that these systems could serve as an alternative to the administration methods employed until now. ; This research was funded by the Spanish Government (projects RTI2018-100910-B-C41 and RTI2018-101599-B-C22-AR (MCUI/FEDER, EU)) and the Generalitat Valenciana (project PROMETEO/2018/024 and ACIF/2016/023 grant). ; Poyatos-Racionero, E.; González-Álvarez, I.; González-Álvarez, M.; Martínez-Máñez, R.; Marcos Martínez, MD.; Bernardos Bau, A.; Aznar, E. (2020). Surfactant-Triggered Molecular Gate Tested on Different Mesoporous Silica Supports for Gastrointestinal Controlled Delivery. Nanomaterials. 10(7):1-18. https://doi.org/10.3390/nano10071290 ; S ; 1 ; 18 ; 10 ; 7 ; Pérez-Esteve, É., Ruiz-Rico, M., de la Torre, C., Llorca, E., Sancenón, F., Marcos, M. D., … Barat, J. M. ...

[EN] A new delivery microdevice, based on hydrophobic oleic acid¿capped mesoporous silica particles and able to payload release in the presence of surfactants, has been developed. The oleic acid functionalization confers to the system a high hydrophobic character, which avoids cargo release unless surfactant molecules are present. The performance of this oleic¿acid capped microdevice in the presence of different surfactants is presented and its zero¿release operation in the absence of surfactants is demonstrated. ; The authors want to thank the Spanish Government (projects MAT2015-64139-C4-1-R, AGL2015-70235-C2-1-R and AGL2015-70235-C2-2-R (MINECO/FEDER)) and RTI2018-100910-B-C41, RTI2018-101599-B-C22 and RTI2018-101599-B-C21 (MCUI/AEI/FEDER, UE)) and Generalitat Valenciana (project PROMETEO/2018/024) for support. E.P.-R. thanks the Generalitat Valenciana for her predoctoral fellowship. A.B. wants to acknowledge the Spanish Government for the financial support Juan de la Cierva Incorporación IJCI-2014-21534. The authors also thank the Electron Microscopy Service at the UPV for support. ; Poyatos-Racionero, E.; Pérez-Esteve, É.; Marcos Martínez, MD.; Barat Baviera, JM.; Martínez-Máñez, R.; Aznar, E.; Bernardos Bau, A. (2019). New Oleic Acid-Capped Mesoporous Silica Particles as Surfactant-Responsive Delivery Systems. ChemistryOpen. 8(8):1052-1056. https://doi.org/10.1002/open.201900092 ; S ; 1052 ; 1056 ; 8 ; 8 ; HARRISON, K. (2007). Introduction to polymeric drug delivery systems. Biomedical Polymers, 33-56. doi:10.1533/9781845693640.33 ; Bourganis, V., Karamanidou, T., Kammona, O., & Kiparissides, C. (2017). Polyelectrolyte complexes as prospective carriers for the oral delivery of protein therapeutics. European Journal of Pharmaceutics and Biopharmaceutics, 111, 44-60. doi:10.1016/j.ejpb.2016.11.005 ; El-Safty, S. A., Shenashen, M. A., & Ismail, A. A. (2012). A multi-pH-dependent, single optical mesosensor/captor design for toxic metals. Chemical Communications, 48(77), 9652. doi:10.1039/c2cc34788a ...

1052 1056 8 ; S Kickelbick, G. (2004). Mesoporöse anorganisch-organische Hybridmaterialien. Angewandte Chemie, 116(24), 3164-3166. doi:10.1002/ange.200301751 ; Candel, I., Aznar, E., Mondragón, L., Torre, C. de la, Martínez-Máñez, R., Sancenón, F., … Parra, M. (2012). Amidase-responsive controlled release of antitumoral drug into intracellular media using gluconamide-capped mesoporous silica nanoparticles. Nanoscale, 4(22), 7237. doi:10.1039/c2nr32062b ; [EN] A new delivery microdevice, based on hydrophobic oleic acid¿capped mesoporous silica particles and able to payload release in the presence of surfactants, has been developed. The oleic acid functionalization confers to the system a high hydrophobic character, which avoids cargo release unless surfactant molecules are present. The performance of this oleic¿acid capped microdevice in the presence of different surfactants is presented and its zero¿release operation in the absence of surfactants is demonstrated. The authors want to thank the Spanish Government (projects MAT2015-64139-C4-1-R, AGL2015-70235-C2-1-R and AGL2015-70235-C2-2-R (MINECO/FEDER)) and RTI2018-100910-B-C41, RTI2018-101599-B-C22 and RTI2018-101599-B-C21 (MCUI/AEI/FEDER, UE)) and Generalitat Valenciana (project PROMETEO/2018/024) for support. E.P.-R. thanks the Generalitat Valenciana for her predoctoral fellowship. A.B. wants to acknowledge the Spanish Government for the financial support Juan de la Cierva Incorporación IJCI-2014-21534. The authors also thank the Electron Microscopy Service at the UPV for support. Poyatos-Racionero, E.; Pérez-Esteve, É.; Marcos Martínez, MD.; Barat Baviera, JM.; Martínez-Máñez, R.; Aznar, E.; Bernardos Bau, A. (2019). New Oleic Acid-Capped Mesoporous Silica Particles as Surfactant-Responsive Delivery Systems. ChemistryOpen. 8(8):1052-1056. https://doi.org/10.1002/open.201900092 HARRISON, K. (2007). Introduction to polymeric drug delivery systems. Biomedical Polymers, 33-56. doi:10.1533/9781845693640.33 Bourganis, V., Karamanidou, T., Kammona, O., & ...

Mesoporous silica microparticles functionalized with lactose for the specific release of essential oil components (EOCs) in the small intestine are presented. In vitro and in vivo intestinal models were applied to validate the microparticles (M41-EOC-L), in which the presence of lactase acts as the triggering stimulus for the controlled release of EOCs. Among the different microdevices prepared (containing thymol, eugenol and cinnamaldehyde), the one loaded with cinnamaldehyde showed the most significant Caco-2 cell viability reduction. On the other hand, interaction of the particles with enterocyte-like monolayers showed a reduction of EOCs permeability when protected into the designed microdevices. Then, a microdevice loaded with cinnamaldehyde was applied in the in vivo model of Wistar rat. The results showed a reduction in cinnamaldehyde plasma levels and an increase in its concentration in the lumen of the gastrointestinal tract (GIT). The absence of payload release in the stomach, the progressive release throughout the intestine and the prolonged stay of the payload in the GIT-lumen increased the bioavailability of the encapsulated compound at the site of the desired action. These innovative results, based on the specific intestinal controlled delivery, suggest that the M41-payload-L could be a potential hybrid microdevice for the protection and administration of bioactive molecules in the small intestine and colon. ; Ministerio de Ciencia, Innovación y Universidades (Spanish Government) )the Agencia Estatal de Investigación (AEI) and European Union (projects RTI2018-100910-B-C41 and RTI2018-101599-B-C22-AR (MCIU/AEI/ FEDER, EU)) ; Ministerio de Universidades (Spanish Government) (BG20/00020, A.B. Beatriz Galindo contract) ; Agencia Estatal de Investigación and European Union through FEDER (Fondo Europeo de Desarrollo Regional, AEI/FEDER EU, project SAF2016-78756) ; Conselleria de Innovación, Universidades, Ciencia y Sociedad Digital, Generalitat Valenciana (project PROMETEO 2018/024 and E.P-R. predoctoral grant ACIF/2016/023)