Chemical composition and free radical-scavenging activities of monofloral bee pollen from Mimosa pudica L.

Phenolamide and flavonoid glycoside profiles of 20 types of monofloral bee pollen

“…The 31 phenolamides and their 33 cis/ trans isomers were identified from 17 floral types of bee pollen. Compounds A1, A2, A13, A14, A15, A17, A18, A19, A22, and A23 were consistent with the previous work regarding phenolamides in bee pollen from Colombia, Italy and Spain using UHPLC -Orbitrap Mass (Gardana et al, 2018) and from Mimosa pudica L. using UPLC-QTOF-MS (Pereira Gomes et al, 2022). Recently, 21 phenolamides were identified in milk thistle, apricot, buckwheat, lotus, rose, camellia, rapeseed, and sunflower bee pollen using UPLC-QTOF-MS based metabolomics (Zhang et al, 2022), while lacking information about the substituent positions and cis/trans isomers of these phenolamides.…”

“…These conjugated components are generally named as hydroxycinnamic acid amide (HCAA) derivatives or phenolamides. Recently studies have shown that bee pollen is rich in phenolamides, for example, 18 phenolamides in Quercus mongolica bee pollen (Kim et al, 2018); 13 phenolamides in Mimosa pudica L. bee pollen (Pereira Gomes et al, 2022); 5 phenolamides in rapeseed bee pollen (H. Zhang et al, 2020), and 18 phenolamides in bee pollen from Colombia, Italy and Spain (Gardana et al, 2018). Additionally, the previous research demonstrated that bee pollen contains various flavonoids (Giampieri et al, 2022;Thakur & Nanda, 2020), which attribute to a variety of functional activities, such as antioxidant, antidiabetic and anti-inflammatory properties (Giampieri et al, 2022).…”

Identification of phenolamine in rape bee pollen and its protective effect and mechanism on alcoholic liver injury

“…All the animal procedures were performed in accordance with the Guidelines for Care and Use of Laboratory Animals of Huazhong Agricultural University and were approved by the Animal Ethics Committee of Huazhong Agricultural University (HZAUMO-2020-0102). A total of 60 male C57BL6 mice ((20 ± 2) g) were randomly divided into 5 groups (n = 12): (1) control group (C), (2) ALD model group (M), (3) low-dose PPE group (PPEL), (4) high-dose PPE group (PPEH), and (5) positive control group (P). Mice in the C group were given the control diet, and mice in other group were given with an alcohol diet.…”

“…Recent studies have revealed that phenolamines are another important class of polyphenol compounds in bee pollen. For example, there are 9 phenolamides in Quercus mongolica bee pollen [3] and 13 phenolamides in Mimosa pudica L. bee pollen [4] . However, there have been few reports on the types and content of phenolamines in rape bee pollen.…”