Mechanism of the secondary metabolites and key enzymes of Monascus spp. to promote tocopherol enrichment.

Food Chem

School of Liquor and Food Engineering Guizhou University, Guiyang 550025, China; Guizhou Provincial Key Laboratory of New Quality Processing and Storage of Ecological Specialty Foods, Guiyang 550025, China. Electronic address:

Published: October 2025


Category Ranking

98%

Total Visits

921

Avg Visit Duration

2 minutes

Citations

20

Article Abstract

Monascus-fermented coix seed exhibits enhanced tocopherol accumulation compared to other strains, yet mechanisms remain unclear. Whether Monascus metabolites/enzymes drive this enrichment is worth exploring. Comparative genomics and transcriptomics were employed to analyze secondary metabolite profiles and tocopherol enrichment capabilities across Monascus strains. The results revealed that γ-aminobutyric acid (GABA) derived from amino acid metabolism is channeled into both the Shikimate pathway to generate homogentisic acid (a tocopherol precursor) and the Mevalonate pathway to produce ergosterol and geranylgeranyl diphosphate (another precursor). Furthermore, the total tocopherol content of M1 and M1 + 3 reached 168 and 148 μg/g DW, positively correlating with ergosterol content (p < 0.05). Transcriptomic data further demonstrated strain-specific differences in tocopherol enrichment, linked to upregulated expression of key genes (HPPD, ERG4, MVD, FDPS, GGPS1) governing precursor biosynthesis. Crucially, we validated that ergosterol acts as a stimulator of tocopherol synthesis, directly supporting our hypothesis on pathway crosstalk. This study elucidates microbial-driven tocopherol enrichment mechanisms via precursor allocation and transcriptional regulation, providing insights into bioactive compound synthesis in complex metabolic networks.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.foodchem.2025.144860DOI Listing

Publication Analysis

Top Keywords

tocopherol enrichment
8
tocopherol
5
mechanism secondary
4
secondary metabolites
4
metabolites key
4
key enzymes
4
enzymes monascus
4
monascus spp
4
spp promote
4
promote tocopherol
4

Similar Publications

This study investigated the emulsion stability, physicochemical properties, nutritional content, and sensory characteristics of hazelnut butter formulations () enriched with grape molasses () as alternative to starch-based refined sugar () or beet sugar both with and without palm oil stabilizer () and skimmed milk powder (). The incorporation of increased the Hunter *, *, and * values, while and generally reduced color values and increased % ( < 0.05).

View Article and Find Full Text PDF

Synthesis and biological evaluation of α-D-tocopherol derivatives as anticancer agents targeting mitochondrial metabolism.

Eur J Med Chem

August 2025

Department of Biomedical Sciences, Graduate School of Medical Science, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea; Graduate School of Clinical Drug Discovery & Development, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seou

Cancer, driven by mitochondrial and nuclear DNA mutations, presents opportunities for targeted therapies. Gastric cancer (GC), the 4th leading cause of cancer-related deaths, has poor prognosis due to cancer stem cells (CSCs), which depend on mitochondrial complex II (CII) respiration. Among CSC-enriched subtypes, the aggressive stem-like/EMT/Mesenchymal (SEM) GC subtype exhibits high plasticity, chemotherapy resistance, and metabolic adaptations that promote tumor survival.

View Article and Find Full Text PDF

Modern meat processing faces several challenges, including high resource consumption, environmental impact, and the need to enhance the nutritional and biological value of finished products. In this context, interest is growing in functional plant-based ingredients capable of improving the quality of meat products. The aim of this study was to evaluate the effect of adding 0.

View Article and Find Full Text PDF

Unveiling multifunctional bioactive phytochemicals and antioxidants in tangerine pomace for value-added applications.

Food Chem

August 2025

School of Chemical Engineering, Sungkyunkwan University, 2066, Seobu-Ro, Jangan-Gu, Suwon, Gyeong Gi-Do 16419, Republic of Korea; School of Mechanical Engineering, Sungkyunkwan University, 2066, Seobu-Ro, Jangan-Gu, Suwon, Gyeong Gi-Do 16419, Republic of Korea; SKKU Advanced Institute of Nano Techno

Tangerine pomace (TGP), a byproduct of juice processing, holds great potential as a source of health-promoting phytochemicals. Its chemical complexity, however, requires high-resolution analytical techniques and tailored solvent strategies for effective extraction. This study utilized comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometry (GC × GC-TOF-MS) and other advanced instrumentations to thoroughly profile solvent-specific phytochemicals extracted with ethanol and n-hexane.

View Article and Find Full Text PDF

Background: Liver fibrosis, characterized by the progressive accumulation of excessive extracellular matrix (ECM), remains a major global health issue with limited treatment options. The gut-liver axis, particularly the dynamics of gut microbiota and bile acids (BAs), plays a pivotal role in modulating hepatic fibrogenesis. Alpha-tocopheryl quinone (TQ), a vitamin E metabolite, exhibits antioxidative and anti-inflammatory properties; however, its impact on liver fibrosis remains unexplored.

View Article and Find Full Text PDF