Acknowledgements

Interesting and recent information corresponds to a study by Cheaib and coworkers, Entry 18, reporting the extraction comparing the solid/liquid extraction with infrared-assisted extraction. In this study, the FIR pomace extract, from apricot, gave the highest polyphenolic content, flavonoid, and tannin yields. In addition, the inhibitory activity study against gram-positive and gram-negative bacteria was performed, and the infrared pomace gave the highest activity in comparison

E Vegetable specimen Extracted compounds Ref. 13 Tagetes erecta L. p-Coumaric acid, gallic acid, among others [70]

16 Glycine max M. Daidzein, and genistein [73] 17 Fagopyrum spp. Polyphenols and flavonoids [74] 18 Apricot Polyphenolic, flavonoids, and tannins compounds [75] 19 Habanero pepper Capsaicin and dihydrocapsaicin [76]

15 Hibiscus cannabinus L. Polyphenolic and flavonoids compounds, kaempferitrin,

among others

Picroside I and picroside II [71]

More recently, Entry 19, Martínez and coworkers have reported the extraction of capsaicin and dihydrocapsaicin, from habanero pepper in a comparative study, the use of NIR as source of extraction with EtOH as solvent, showed the best yields, 43.88 and 29.44% for capsaicin, and dihydrocapsaicin, respectively. The effect of nonconventional energies was analyzed by means of SEM micrographs, resulting in an NIR-procedure with a higher number of intact particles in the cellular matrix, in

The results showed in this section correspond to novel results, being important to note that they have been recently submitted for publication or are under writing. A green contribution to produce SiO2–TiO2 catalyst is offered, using NIR in comparison with other nonconventional energy sources and mantle heating. According to the obtained results, the materials were produced in short time reaction employing water as solvent. The results, for NIR strategy, show that smaller crystal size (15.3 nm) and higher BET surface area were obtained (335.2 m<sup>2</sup>

addition, the surface area obtained by mean NIR procedure, in comparison with other process, is due to that the water in the reaction was partially evaporated, affecting the hydrolysis process, but the pore and volume diameter was improved

Related to natural product extraction, Miranda et al. have achieved a wide study about the extraction of perezone, from roots of both Acourtia adnata and Acourtia platyphylla comparing various modes: MH, NIR, MW, US, and supercritical CO2. It is appropriated to comment that the yield obtained from the extraction with

/g, respectively) in comparison with the MH mode(2.77 nm

/g). In

[72]

with infrared kernel, solid-liquid pomace, and solid-liquid kernel.

3. Unpublished results from our and other laboratories

comparison with nonirradiated material.

(4.33 nm and 0.363 cm3

/g) [77].

and 0.290 cm<sup>3</sup>

46

14 Picrorhiza scrophulariiflora Pennell

Green Chemistry Applications

E = Entry, Ref = Reference.

Extraction of natural compounds.

Table 8.

We would like to thank the Laboratorio de Estudios sobre Quimica Verde, L-122, Departamento de Ciencias Quimicas, Facultad de Estudios Superiores Cuautitlan, Universidad Nacional Autonoma de Mexico for financial affordings. R. Miranda Acknowledges PAPIME-UNAM PE 209919 for financial support.
