Loquat Leaf Extract

The main functional components of loquat leaf extract are triterpenoids, flavonoids, polyphenols, polysaccharides, and volatile oils.

Healthkintai^® uses high-quality loquat leaves and uses advanced technologies including supercritical fluid extraction to retain the purity and efficacy of the active ingredients in loquat leaves to the greatest extent.We have  90%, 98%Ursolic acid, 5%-20% corosolic acid extract from the loquat leaf.Therefore, it is mostly used in the pharmaceutical industry and food processing, with customers in more than ten countries around the world. Want to add loquat leaf extract to your products? Welcome to contact us to learn more!

Loquat leaves have been used in China for centuries. According to the Food Safety Law of the People's Republic of China and the Measures for the Administration of Safety Review of New Food Ingredients, loquat leaves have been approved as a new food ingredient and can be used in food production and processing. Research has shown that loquat leaves contain triterpenoids such as ursolic acid, oleanolic acid, and maslinic acid; polyphenols such as chlorogenic acid, quercetin, and rutin; as well as organic acids and polysaccharides. Previous studies by our research group have found that ursolic acid has the potential to alleviate sarcopenia. Other studies have also found that ursolic acid can exert anti-inflammatory or lipid metabolism-regulating effects through different pathways, such as regulating peroxisome proliferation activated receptor-α (PPAR-α) and its downstream targets such as sterol regulatory element binding protein-1c (SREBP-1c) and stearoyl-CoA desaturase 1 (SCD1) to affect the expression of lipid metabolism-related gene proteins, or increase muscle tissue fatty acid absorption and lipid consumption through the uncoupling protein 3/AMP-activated protein kinase (UCP3/AMPK) signaling pathway, thereby improving the body's lipid deposition.

（reference：REN Yijing, HUANG Jian, ZHAO Lei, et al. Effect and mechanism of loquat leaf extract combined with exercise on lipidmetabolism in high-fat diet induced mice[ J] . Journal of Food Science and Technology, 2025,43(4) :35 - 49.）

1. Protects the Respiratory System

The saponins and volatile oils in its extract have been shown to effectively suppress the cough center, relieve bronchospasm, and thin sputum, promoting its passage. They can significantly relieve and treat coughs, sputum, and wheezing caused by colds, bronchitis, and chronic obstructive pulmonary disease.

2. Anti-inflammatory and Antibacterial

Modern pharmacological research has shown that the extract possesses broad-spectrum antibacterial and anti-inflammatory properties. The polyphenols and flavonoids in its extracts effectively inhibit a variety of common pathogens. Furthermore, it can reduce inflammation, providing a beneficial adjunctive therapeutic effect for respiratory infections and inflammation, helping the body more quickly resist and eliminate pathogens.

3. Antioxidant

Loquat leaves are rich in powerful natural antioxidants, including vitamins C and E, as well as various polyphenols and flavonoids. These substances effectively scavenge free radicals in the body and mitigate cellular damage caused by oxidative stress. Long-term consumption can help slow cellular aging, reduce the risk of chronic diseases caused by oxidative damage, such as cardiovascular disease and certain cancers, and maintain healthy skin from the inside out.

4. Assists in Lowering Blood Sugar

Triterpenoids and other components in loquat leaves have the potential to lower blood sugar levels. They can help regulate blood sugar levels through various pathways, including improving tissue glucose utilization, inhibiting gluconeogenesis, and protecting pancreatic beta cells.

5. Promotes Digestion

In traditional medicine, loquat leaves are slightly cold and bitter in nature. They enter the lung and stomach meridians, clearing stomach heat and relieving adverse qi. Their extracts can gently stimulate the secretion of digestive juices, relieving nausea, vomiting, loss of appetite, and stomach discomfort caused by stomach heat. They can also help regulate indigestion, a common problem among modern people due to dietary irregularities.

1. Healthcare

This is the most traditional and core application area for loquat leaves extract. It is primarily used as a natural medicinal ingredient to treat respiratory illnesses such as acute and chronic bronchitis and coughs caused by colds. Its anti-inflammatory and antibacterial properties also make it suitable for use in lozenges and mouthwashes to relieve pharyngitis and laryngitis.

2. Functional Foods and Health Products

Thanks to its antioxidant and potential blood sugar-lowering effects, loquat leaf extract has been developed into a variety of health foods. Common forms include loquat leaf tea bags, solid beverages, and capsules for daily consumption, meeting people's daily health and wellness needs.

3. Cosmetics and Personal Care

The polyphenols and flavonoids in loquat leaves extract possess excellent antioxidant and anti-inflammatory properties, making it a favorite in the cosmetics industry. It is often added to products such as facial masks, serums, and creams, primarily to help with skin inflammation, soothing, and brightening, combating skin aging caused by oxidative stress.​​​​​​​​​​​​​​

Q1: What are the main active ingredients in loquat leaf extract?

A1: Mainly includes ursolic acid, oleanolic acid, kaempferol, quercetin, corosolic acid and hesperidin, etc.

Q2: Can it be used in combination with other supplements? 

A2: Yes, it can be used in combination, but consult with a healthcare provider to ensure compatibility.

Q3: Are there any known side effects?

A3: It is well-tolerated, but individuals with allergies to related plants should exercise caution. Mild gastrointestinal effects may occur in some cases.

Q4: Is the extraction source reliable?

A4: Yes, Kintai always insists on selecting the best loquat leaves from the source, which are free of pollution, pesticide residues and microbial residues.