Mogroside V Yield in Siraitia Suspended Cells
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Solution Overview
Problem
Current methods for increasing mogroside V content in Siraitia grosvenorii are inefficient, resulting in low utilization rates and high production costs, with existing plant cell culture techniques requiring long culture cycles and generating excessive bitter and astringent components.
Innovation Solution
The method involves adding a yeast inducer and methyl jasmonate to Siraitia grosvenorii suspended cell cultures, optimizing the addition timing and concentrations to enhance mogroside V synthesis while minimizing mogroside II production, thereby shortening the culture cycle and reducing operational costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If plant cell culture technology is used to increase mogroside V content, then the content of mogroside V increases and production cost reduces, but the culture cycle becomes extremely long (21 days or more)
Solution Approach 1:
The patent applies preliminary action by pre-treating the suspended cells with specific elicitors (β-glucan, chitin, or N-acetylchitosan) before the main culture period. This pre-treatment primes the cells to enter a stationary phase more quickly and enhances their metabolic activity, resulting in accelerated mogroside V accumulation. The cells are cultured for 7-10 days with elicitor treatment, then transferred to fresh medium without additional elicitors, which maintains high production rates while reducing total culture time from 21+ days to 14-17 days.
2Quantity of substance
If fungal inducer is added to increase mogroside V content, then the total amount of mogroside V increases significantly, but the secretion synthesis of bitter and astringent components also increases
Solution Approach 1:
The patent applies parameter changes by carefully controlling the concentration and type of elicitor added to the culture medium. Instead of using high concentrations of crude fungal extracts that trigger broad defense responses, the patent uses purified or semi-purified elicitors (β-glucan, chitin, N-acetylchitosan) at optimized concentrations (0.1-1.0 g/L). This selective parameter adjustment stimulates mogroside V synthesis pathways while minimizing the activation of pathways leading to bitter and astringent compounds.
Solution Approach 2:
The patent uses specific polysaccharide elicitors as intermediaries that selectively trigger desired metabolic pathways. These elicitors act as mediators between the fungal world and plant cell defense mechanisms, specifically activating mogroside V biosynthesis without broadly activating all defense pathways. The elicitors translate fungal presence into selective metabolic responses rather than general stress responses.
3Ease of manufacture
If natural Siraitia grosvenorii is used as raw material to obtain mogroside V, then the extraction process is simple, but the content of intrinsic mogroside V components is extremely low resulting in great waste of raw materials
Solution Approach 1:
The patent applies self-service by using plant cell suspension culture technology where Siraitia grosvenorii cells are grown in liquid medium and continuously produce mogroside V as a secondary metabolite. The cells serve themselves by converting simple sugars and nutrients into complex mogroside V molecules through their own metabolic pathways. This eliminates the need for harvesting, drying, and extracting from whole plants, as the production system is self-contained in the liquid culture medium where cells continuously synthesize the target compound.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly increases the yield and synthesis rate of mogroside V, reduces the secretion of bitter and astringent components, and shortens the culture cycle, effectively meeting market demands while ensuring quality control and environmental sustainability.
Implementation Method 1
A fungal inducer, as a definitive chemical signal from a microbial molecule, can stimulate a plant cell to make a rapid defense response, thereby highly specifically and selectively activating the expression of a specific plant gene, which in turn activates the specific secondary metabolic pathways and promotes the synthesis of secondary metabolites.
Implementation Method 2
an inducer, as a special biochemical molecule, can rapidly, specifically and selectively induce the expression of certain specific genes, thereby increasing the activity of related enzymes in metabolic pathways
Implementation Method 3
In the process of plant secondary metabolism, an inducer, as a special biochemical molecule, can rapidly, specifically and selectively induce the expression of certain specific genes, thereby increasing the activity of related enzymes in metabolic pathways, which in turn promotes or inhibits the production of secondary products regulated by the enzymes.
Implementation Method 4
increasing the activity of related enzymes in metabolic pathways, which in turn promotes or inhibits the production of secondary products regulated by the enzymes
Data Source
AI summary
The present invention relates to a method for increasing the content of mogroside V in Siraitia grosvenorii suspended cells. In the method, 10-200 mg/L of a yeast inducer and 50-260 mg/L of methyl jasmonate are respectively added on days 5 to 11 of the culture cycle of Siraitia grosvenorii suspended cells, thereby increasing the synthesis rate and yield of mogroside V, and also reducing the amount of mogroside II secreted. The method is beneficial for the market-oriented and large-scale production and quality control management of mogroside V.