Shedding light into the health‐beneficial properties of Corema album—A vibrational spectroscopy study

Abstract

Corema album (L.) D. Don is a wild maritime shrub endemic to the Iberian Peninsula, which contains bioactive compounds with promising chemoprotective activity. The present work reports the first study of the edible fruits of this potentially health‐beneficial plant by complementary Raman and infrared techniques. Unique vibrational signatures were obtained for each part of the Corema album berries, revealing distinct chemical compositions for the skin (outer and inner) and the seeds, particularly regarding the content in phenolic derivatives, unsaturated fatty acids, and waxy polymers.

Study the impact of ultra-sonication and pulsed electric field on the quality of wheat plantlet juice through FTIR and SERS

“…Details of peaks and their assignment are presented in Table 3 . The peak assignments were also reported by various researchers in plant-based products [65] , [66] , [67] . Earlier, Malekfar, Nikbakht, Abbasian, Sadeghi, and Mozaffari [68] determined the tomato juice quality by SERS.…”

Novel Insights into Corema album Berries: Vibrational Profile and Biological Activity

“…Figure 4 shows the Raman spectra of the BSO and FBP extracts in the spectral region 400-3750 cm −1 . Regarding BSO, the similarities with the data obtained by Martin et al (2020) for the pure sample are remarkable. One of these concerns the signal at 1528 cm −1 , which is undetected in the pure seed.…”

“…On the other hand, the feature at 1742 cm −1 , characteristic of esterified fatty acids [53], reveals a considerable amount of esters attending to the quite large shift relative to ν(C=O) acid [54]. The Raman spectrum of the BSO is very similar to that of the pure seed previously reported [13], thus showing that the main seed components are those present in the oil. In the light of these results, it is possible to conclude that the efficiency of the extraction procedure currently performed was quantitative, constituting an interesting methodology for future studies of edible fruits.…”

“…One of the main aspects of the Raman profile is the bands found at 1609 (ν(C=C) ring/propenoic chain ) and 1633 cm −1 (ν(C=O) ring, chain ), which corroborate the presence of high amounts of phenolic acids. In fact, these signals are characteristic of ferulic and p-coumaric acids [17][18][19][20] and are complemented with the feature at 1722 cm −1 ascribed to the ν(C=O) mode from phenolic acid derivatives [13]. As expected, the water amount is clearly higher for the FBP extract (Figure 4B) as compared to BSO (Figure 4A).…”

“…One of these concerns the signal at 1528 cm −1 , which is undetected in the pure seed. This band is assigned to ν(C=C) found in conjugated polyenes such as lutein (widely present in oilseeds of many plants) [13,16]. Additionally, it is noteworthy that the signal at 3015 cm −1 (Figure 4A), which evidences that the fatty acids/esters within this sample are cis-saturated.…”