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Daidzin is a natural isoflavone glycoside extracted from leguminous plants such as soybeans, presenting as white or off-white crystalline powder. Its chemical structure consists of a soy glycoside as the aglycone, linked to a glucose molecule through a glycosidic bond. This structure is the key to its biological activity and metabolic fate. As an important member of the plant estrogen family, it can be hydrolyzed by intestinal flora in the body, potentially releasing a more active aglycone.
Modern pharmacological research has revealed that this exhibits a variety of remarkable biological activities. In particular, its ability to non-competitively inhibit acetaldehyde dehydrogenase has led to in-depth exploration as a potential alcohol cessation drug. It works by delaying the clearance of alcohol metabolite acetaldehyde, causing discomfort reactions. Additionally, it shows potential benefits in regulating blood lipids, antioxidation, and prevention of osteoporosis, demonstrating the multiple values and broad prospects of natural products as lead compounds in the fields of nutritional health supplements and drug development.

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Chemical Formula |
C21H20O9 |
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Exact Mass |
416 |
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Molecular Weight |
416 |
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m/z |
416 (100.0%), 417 (22.7%), 418 (2.5%), 418 (1.8%) |
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Elemental Analysis |
C, 60.58; H, 4.84; O, 34.58 |

important uses and potential pharmacological effects
Daidzin is a natural Isoflavonoid compound, which has many important uses and potential pharmacological effects.
1. Plant stress enhancer: It has been found to enhance plant tolerance to stress, such as drought and high temperatures. Research has shown that It can regulate the growth and metabolic processes of plants, promoting their physiological adaptability.
2. Antioxidants: It has strong antioxidant activity, which can effectively eliminate free radicals and protect cells from oxidative damage. This gives It potential anti-aging and chronic disease prevention properties.


3. Inhibition of alcohol intake: Research has found that It can reduce the generation of formaldehyde by inhibiting the activity of alcohol acid dehydrogenase, thus reducing the side effects produced in the process of alcohol metabolism. Therefore, It may help reduce alcohol intake and promote the development of alcohol related diseases.
4. Anti inflammatory effect: It has a certain anti-inflammatory effect, which can inhibit the production of inflammatory mediators and the development of inflammatory reactions. This makes it have potential application value in the treatment of inflammatory diseases.
5. Anti tumor activity: Some studies have shown that It may have anti proliferative and anti metastatic effects on certain tumor cells. It can interfere with the growth and transformation of tumor cells through multiple pathways, thereby inhibiting the development of tumors.
6. Bone protective effect: It has been found to promote the formation and calcification of bone cells, increase bone density, and reduce the occurrence of osteoporosis. This makes it a potential drug for preventing and treating osteoporosis.


7. Antibacterial effect: It has certain antibacterial activity and can inhibit the growth of various bacteria and fungi. This makes it have certain application prospects in the fields of food preservation, medicine, and personal care products.
8. Cardiovascular protection: It is considered to have cardiovascular protective effects such as lowering blood pressure, lowering cholesterol level and inhibiting platelet aggregation. This makes product potentially important for the prevention of cardiovascular disease.

Itis a natural Isoflavonoid compound, which widely exists in soybeans and their products. Although It has been isolated from soybean, there is no report on how to synthesize daidzin through Total synthesis. Therefore, the following will introduce the synthesis research and application fields related to product.
It is a Natural product of Isoflavonoid and has important pharmacological effects. Many researchers are working on the synthesis of It and other Isoflavonoid through Total synthesis. These Total synthesis methods include the use of various chiral compounds to synthesize the chiral carbon center of the target product, and the use of cyclization to construct a ring structure.
It and its derivatives have extensive application potential in the field of Drug development. For example, It was found to inhibit the activity of alcohol acid dehydrogenase in alcohol metabolism and reduce the production of formaldehyde. Therefore, product and its derivatives may be used to develop drugs for the treatment of Alcohol intoxication and alcohol related diseases. In addition, It also has various biological activities such as antioxidant, anti-inflammatory, and anti-tumor properties, which provide the possibility for further research and development of drugs for treating various diseases.
It has the function of enhancing plant stress resistance and promoting plant growth. Therefore, applying product and its derivatives to the agricultural field may help increase crop yield, increase crop resistance to pests and diseases, and improve environmental adaptability.
It has certain antibacterial activity and can inhibit the growth of bacteria and fungi. Therefore, It and its derivatives may be used to develop new antibacterial agents and food additives, which contribute to food preservation and safety.
It has strong antioxidant activity, which can eliminate free radicals and protect cells from oxidative damage. Therefore, It as a natural antioxidant, may be used to prepare antioxidants and nutritional supplements, helping to provide health functions and prevent chronic diseases.
It should be pointed out that there is still relatively little research on the synthesis and application of product, and most of the research focuses on the natural sources and biological activities of product. Therefore, further research and development are needed to explore the synthesis pathways and application fields of it.

Overexpression of it synthase gene in soybean fields actually attracts new herbivorous beetle species
Soybean, as an important global oil crop and protein source, is seriously threatened by pests and diseases in terms of yield and quality. In recent years, with the breakthrough of synthetic biology technology, enhancing soybean stress resistance through gene editing has become a research hotspot. Among them, overexpression of Daidzin Synthase Gene (DSG) has been shown to significantly increase the content of isoflavone compounds (such as Deidzin and Genistin) in soybeans.


Thereby enhancing their resistance to pathogens. However, field experiments unexpectedly found that soybean fields overexpressing DSG instead attracted the aggregation of new herbivorous beetles, resulting in damage to plant roots and a decrease in yield.This phenomenon reveals the complex interaction between plant resistance mechanisms and insect behavioral ecology:The function of Deidzin synthase gene and regulation of isoflavone metabolism
Biological role of DSG gene
The enzyme encoded by the DSG gene is a key rate limiting enzyme in the biosynthesis pathway of isoflavones, responsible for catalyzing the conversion of daidzein to deidzin. Isoflavones, as secondary metabolites of soybeans, have multiple functions:Anti pathogenic bacteria: By destroying the cell membrane of pathogenic bacteria, inhibiting enzyme activity, and other methods, it can resist fungal diseases such as soybean phytophthora and root rot;Antioxidant: Clearing free radicals and delaying plant aging;Signal transduction: Participate in the interaction between plants and microorganisms, regulate the structure of root symbiotic bacterial communities.


Resistance effect of increased isoflavone content
Research has shown that overexpression of DSG can increase deidzin content in soybean leaves and seeds by 3-5 times, significantly reducing the infection rate of pathogens. For example, in the Meloidogyne incognita infection experiment in the south, the root nematode density of high isoflavones soybean varieties decreased by 62% compared to ordinary varieties. However, this increased resistance may incur a "cost" for insect behavioral adaptation.
Biological characteristics and behavioral response of a new herbivorous beetle
Dietary differentiation and ecological niche of scarab beetles
Scarabaeidae is a widely distributed group in the order Coleoptera, with both its larvae (grubs) and adults being herbivorous. According to their diet, turtles can be divided into:Phytophagy: feeds on plant roots and leaves, such as the copper green beetle (Anomala corpulenta);Carnivorous diet: decomposes decaying organic matter, such as the dung beetle (Geotrupidae);Omnivorous: Eating both plant and animal residues.


The new type of scarab observed in this study belongs to the herbivorous subgroup, with adult body length of 12-15mm, black brown body surface, gill shaped antennae, and typical nocturnal phototaxis behavior.Field monitoring shows that the density of this beetle in DSG soybean fields is 2.3 times that of ordinary soybean fields, and it prefers to feed on the roots of high isoflavone varieties.
Paradox of Avoidance and Attraction of Isoflavones to Golden Turtles
The traditional view is that secondary metabolites of plants, such as alkaloids and terpenes, can repel herbivorous insects through bitterness or toxicity.
However, the effect of isoflavones on the beetle presents a "double-edged sword" effect:
Low concentration avoidance: Daidzin content (0.5-1.2 mg/g) in ordinary soybeans can inhibit beetle egg laying and reduce larval survival rate.
High concentration attraction: When the this content in DSG soybeans exceeds 3.5 mg/g, the feeding frequency of adult beetles increases by 40% and the larval development rate accelerates by 15%.
This contradictory phenomenon may be related to the sensory adaptation and metabolic detoxification ability of insects.

Molecular and Chemical Mechanisms of Overexpression of DSG Attracting Turtle

Potential role of isoflavones as insect pheromones
Insects recognize plant volatile organic compounds (VOCs) and secondary metabolites through chemical receptors, such as antennae, to locate their hosts. High concentrations of deidzin may affect the behavior of turtles through the following pathways:Direct attraction: The hydroxyl and glycosidic bonds in the molecular structure of this can simulate the active groups of insect pheromones (such as sex pheromones), triggering the feeding motivation of the beetle;Indirect induction: High levels of isoflavones may alter the composition of soybean root exudates.
Increase the release of volatile substances such as ethanol and acetic acid, form a "chemical signal combination," and enhance attraction to the beetle.
Detoxification and metabolic adaptation of the Golden Turtle
Plant eating insects respond to plant defense compounds through detoxification systems such as cytochrome P450 enzymes (CYP450) and glutathione S-transferase (GST). The new type of beetle may have the following adaptive characteristics:CYP450 gene amplification: Genomic sequencing showed that the copy number of the CYP6 family genes in this beetle increased by 2 times compared to the general population, and it can efficiently metabolize the glycosidic bonds of deidzin.


Symbiotic bacteria assisted detoxification: Analysis of the gut microbiota showed that it is enriched with lactobacilli and Bacillus that can decompose isoflavones, converting this into non-toxic Daidzein.
Triangular interaction between plants, insects, and microorganisms
The ecosystem of DSG soybean fields presents a dynamic balance of "plant resistance upgrading → insect behavioral adaptation → microbial coevolution":
Plant stage: Overexpression of DSG leads to accumulation of isoflavones, forming a chemical defense barrier.
Insect stage: The beetle obtains detoxification ability through genetic mutations and symbiotic bacteria, breaking through defense;
Microbial stage: The gut microbiota obtains isoflavone degradation genes through horizontal gene transfer, enhancing host adaptability.
This process conforms to the theory of "arms race", which states that plants and insects maintain dynamic balance through continuous evolution.

Ecological risks and coping strategies of overexpressing DSG in soybean fields

Sustainable Management Strategy
Gene editing optimization: CRISPR/Cas9 technology is used to knock out specific promoter regions of DSG genes, controlling isoflavone content within the avoidance threshold (1.5-2.5 mg/g);
Crop rotation of insect resistant varieties: planting at intervals with low isoflavone soybeans or insect resistant genetically modified varieties (such as Bt soybeans) to interrupt the food chain of the beetle.
Biological control enhancement:
Release natural enemies of scarab beetles (such as Metarhizium anisopliae and nematodes), or use pheromone traps to reduce insect population density;
Ecological compensation mechanism:
Planting honey plants (such as alfalfa) at the edge of the field to attract natural enemies of scarab beetles to settle and establish a "push-pull" prevention and control system.

FAQ
Daidzein-rich herbs have been used for generations to treat various medical conditions, from menopausal symptoms and cardiovascular disease to cancer [9]. These historical applications have piqued scientific interest, leading to studies of daidzein's mechanisms of action and therapeutic potential.
Soybeans, a cholesterol-free, high protein legume, contain the most daidzein. Daidzein can be found in many food products containing soy such as soy-based infant formulas, tofu, soymilk, soy flour, textured soy protein, soy protein isolates, tempeh, and miso, as well as over-the-counter dietary supplements.
Daidzein is categorized as a phytoestrogen, a type of plant-derived compound with estrogen-like activity. It is primarily indicated for menopausal symptom relief, bone health, and potentially for reducing the risk of hormone-related cancers.
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