email

Theanine-The Source Of The Umami Taste Of Green Tea

Home > News > Tea Industry NewsTheanine-The Source Of The Umami Taste Of Green Tea

Hot Products

news

Precision and Purity: Advancing Tea Quality with Automated Sorting and Cleaning Technology

Precision and Purity: Advancing Tea Quality with Automated Sorting and Cleaning Technology

2026-03-21 17:55:51

The final quality of tea is determined not only by its flavor but also by its visual purity and consistency. This blog explores the critical sorting and cleaning stage of tea processing, detailing how modern winnowing, sifting, and color sorting technologies eliminate impurities and grade leaves with incredible precision. Learn how automating these steps can drastically increase your factory’s output while meeting the highest international food safety standards.

The Science of Preservation: Optimizing Efficiency with Advanced Tea Drying Technology

The Science of Preservation: Optimizing Efficiency with Advanced Tea Drying Technology

2026-03-21 17:53:43

Drying is the final and critical stage in tea manufacturing that locks in flavor, aroma, and essential nutrients. This blog delves into the technical requirements of the drying process and explains how transitioning to modern automated drying systems can maximize factory throughput while ensuring consistent leaf quality. Discover the advantages of high-capacity chain plate and rotary drying solutions.

Efficiency in Tea Processing: How Modern Tea Rolling Machines Transform Production

Efficiency in Tea Processing: How Modern Tea Rolling Machines Transform Production

2026-03-21 17:51:34

Rolling is a pivotal stage in tea manufacturing that defines the leaf's shape and flavor profile. This blog explores the importance of the rolling process and how upgrading to high-efficiency rolling machines can significantly reduce manual labor while maintaining premium quality. Learn how modern mechanical rolling optimizes cell-breaking and juice extraction for a superior brew.

From Leaf to Powder: The Ultimate Guide to Professional Matcha Production Processes

From Leaf to Powder: The Ultimate Guide to Professional Matcha Production Processes

2026-03-21 16:51:30

Matcha is not just ground green tea; it is the result of a rigorous, multi-step artistic and scientific process. This blog explores the essential stages of matcha manufacturing—from specialized shading and steaming to the critical final grinding. Discover how advanced milling technology, like high-mesh ball mills, transforms Tencha into the vibrant, silky powder prized worldwide.

Contact us

Quanzhou Deli Agroforestrial Machinery Co., Ltd.
If you want know more about our products, please send email to us : info@delijx.com. You also can send message to our WeChat or WhatsApp : 0086-18120033767

Theanine-The Source Of The Umami Taste Of Green Tea

2021-12-22 14:38:05

The umami substances in tea are mainly amino acids. Theaflavins, nucleotides and some soluble peptides also have a certain refreshing feeling. Among them, amino acids are considered to be the main components of the fresh and refreshing tea soup. Theaflavins are mainly used in black tea. It plays a role in regulating the taste in fermented tea. The umami-flavored amino acids in tea are mainly theanine, glutamic acid and aspartic acid. Theanine is the most abundant amino acid in tea and is considered to be the main source of the fresh and refreshing green tea.

What is theanine:

Theanine is a special non-protein amino acid (not involved in the formation of protein) in tea plants, which is rare in other plants. It was discovered and named by Japanese scholar Yajiro Shudo in 1950.

The influence of theanine on the quality of tea:

Theanine has a caramel aroma and a refreshing taste similar to MSG, and has a low taste threshold (the lower it is, the easier it is to be perceived). Theanine has a positive effect on the taste and aroma of tea. Theanine can alleviate the bitterness and astringency of tea and enhance the sweetness; amino acids are transformed into volatile aroma substances through degradation.

The distribution of theanine in tea plants:

Theanine generally accounts for 1%-2% of the dry matter content of tea. Theanine content of tea made from albino tea varieties is higher. The roots, stems and leaves of tea plants all contain theanine, with the highest content in roots and tender stems; one bud and one leaf>second leaf>third leaf>fourth and fifth leaves; spring tea>autumn tea>summer tea.

The main physiological activities of theanine:

Theanine is similar in structure to glutamine and glutamate, which are active substances in the brain. Studies have shown that theanine has a protective effect on ischemic brain damage and neuronal cell death induced by glutamate. Theanine also has the effect of protecting neurons and can be used clinically to prevent Parkinson's disease. Theanine also has a positive effect on enhancing memory.

Our company supply whole green tea processing machines to help production of endogenous substances in green tea. So that green tea is full of color, fragrance, and at the same time can be rich in various nutrients.