Abstract
Glucoraphanin (GRA) is a precursor of sulforaphane (SFN), which can be synthesized
by the enzyme myrosinase. In this study, we developed and validated HPLC analytical
methods for the
determination of GRA and SFN in mustard seed powder (MSP), broccoli sprout powder
(BSP), and the MSP-BSP mixture powder (MBP), and evaluated their anti-adipogenic effects
in 3T3-L1
adipocytes. We found that the analysis methods were suitable for the determination
of GRA and SFN in MSP, BSP, and MBP. The content of GRA in BSP was 131.11 ± 1.84 µmol/g,
and the content of
SFN in MBP was 162.29 ± 1.24 µmol/g. In addition, BSP and MBP effectively decreased
lipid accumulation content without any cytotoxicity. Both BSP and MBP significantly
inhibited the
expression of adipogenic proteins and increased the expression of proteins related
to lipolysis and lipid metabolism. BSP and MBP inhibited the expression of adipocyte
protein 2 (aP2),
CCAAT/enhancer-binding protein-α (C/EBP-α), and peroxisome proliferator-activated receptor-γ (PPAR-γ) in 3T3-L1 adipocytes, and inhibited the expression of fatty
acid synthase (FAS) through AMP-activated protein kinase (AMPK). Meanwhile, BSP and
MBP also increased the expression of the lipolysis-related proteins, uncoupling protein-1
(UCP-1) and
carnitine palmitoyltransferase-1 (CPT-1). Moreover, MBP exerted anti-adipogenic to
a greater extent than BSP in 3T3-L1 preadipocytes.
Key words
Sinapis alba L -
Brassica oleracea var. italic
- Brassicaceae - Sulforaphane - Analytical method validation - Anti-adipogenic