Nano-Selenium Hydrosol Functionalized with Polysaccharides
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Solution Overview
Problem
Existing methods for preparing nano-elemental selenium lack effective modifiers to enhance its biological activities, particularly anti-tumor activity, and face challenges with toxicity and dosage limitations.
Innovation Solution
A Pleurotus tuber-regium polysaccharide functionalized nano-selenium hydrosol is developed, combining Pleurotus tuber-regium polysaccharides, Vitamin C, and nano-selenium in specific concentrations, using Vitamin C as a reducing agent to create a stable and bioactive formulation with controlled particle size and reduced toxicity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inorganic selenium compounds or sodium selenite are used as selenium supplements, then selenium can be effectively supplemented to prevent diseases, but the toxicity is strong and selenium poisoning occurs easily
Solution Approach 1:
The patent transforms selenium from toxic inorganic compounds and sodium selenite into nano-selenium particles with controlled size (10-100 nm), changing the physical parameter of selenium form. This parameter change reduces toxicity while maintaining supplementation effectiveness, as the nano-scale form is better tolerated by the body
Solution Approach 2:
The patent creates a composite system by combining nano-selenium with polysaccharide modifiers and stabilizing agents. This composite approach enhances bioavailability and further reduces toxicity compared to pure inorganic selenium compounds, solving the contradiction between effectiveness and safety
2Reliability
If the dosage of selenium is increased to enhance anti-tumor activity, then biological activity improves, but toxicity and selenium poisoning increase
Solution Approach 1:
By changing selenium into nano-scale particles (10-100 nm), the patent achieves higher biological activity at lower dosages. The increased surface area to volume ratio of nano-particles enhances anti-tumor effectiveness while reducing the total amount of selenium needed, thereby reducing toxicity
Solution Approach 2:
The patent introduces polysaccharide modifiers and stabilizing agents as intermediaries between selenium and the biological system. These intermediaries enhance the anti-tumor activity through synergistic effects while protecting against toxicity, allowing effective dosing without poisoning
3Quantity of substance
If conventional reduction methods are used to prepare nano-selenium, then elemental selenium can be obtained, but the morphology and particle size cannot be effectively controlled
Solution Approach 1:
The patent uses polysaccharide modifiers as intermediaries during the reduction process. These modifiers interact with selenium precursors and reducing agents to control nucleation and growth, achieving precise particle size (10-100 nm) and morphology control that conventional methods cannot achieve
Solution Approach 2:
The patent changes multiple parameters including using specific reducing agents (vitamin C, sodium borohydride), controlling pH, temperature, and adding polysaccharide modifiers to achieve precise control over nano-selenium particle size and morphology, transforming the uncontrolled conventional process into a precision synthesis method
4Object-affected harmful factors
If nano-selenium is used to reduce toxicity, then bioavailability and biological activity improve, but the preparation method becomes more complex requiring specific modifiers and regulating agents
Solution Approach 1:
The patent uses polysaccharide modifiers that perform multiple functions simultaneously: they control particle size, stabilize the nano-selenium suspension, prevent aggregation, and enhance bioavailability. This multi-functionality reduces the need for multiple separate additives, simplifying the overall preparation approach while achieving toxicity reduction
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
The formulation achieves synergistic anti-tumor effects, enhancing bioavailability and reducing toxic side effects, allowing for effective cancer treatment with improved efficacy and reduced selenium dosage.
Implementation Method 1
a reducing agent in protein or peptide solution system to reduce the protein or peptide controlled nano-selenium selenium compounds
Implementation Method 2
the morphology is modified or regulated by using a modifier or a regulating agent
Data Source
AI summary
The preparation of Pleurotus tuber-regium polysaccharide functionalized nano-selenium hydrosol with anti-tumor activity includes the following steps: 1) at normal temperature and under normal pressure, adding a Vitamin C solution to an aqueous solution of Pleurotus tuber-regium polysaccharides, and mixing uniformly; 2) adding dropwise a selenium dioxide solution or a selenite solution to the solution while mixing uniformly; and 3) adding water to the solution to a pre-determined volume, to obtain a Pleurotus tuber-regium polysaccharide functionalized nano-selenium hydrosol when the red color of the product is no longer deepened. The polysaccharides are used to control the particle size of nano-selenium, to obtain functionalized nano-elemental selenium with high anti-tumor activity and low toxicity. The anti-tumor activity of the biologically active molecule polysaccharides and the physiological effect of nano-selenium are combined, and a synergistic anti-tumor effect is achieved.