What’s in Our Cup?

At TEATUNE, every sip is more than taste — it’s a carefully composed blend of science and soul. What gives tea its power to calm, energise, refresh, and restore? Let’s take a closer look at the elements in our teacup that make this everyday ritual so extraordinary.

The Big Three: Nature’s Wellness Trio

1. Tea Polyphenols (Especially Catechins)

These powerful plant compounds are natural antioxidants — our internal clean-up crew.

• Catechins like EGCG (epigallocatechin gallate) are known for supporting metabolism and immune function.
• They help reduce oxidative stress, supporting heart, skin, and cellular health.
• Especially abundant in green tea.

Source: Chen et al., 2020; Khan & Mukhtar, 2013

2. L-Theanine

Found almost exclusively in tea leaves, L-theanine is a naturally occurring amino acid that:

• Promotes calm clarity without drowsiness
• Helps balance the stimulating effects of caffeine
• Supports focus and reduced anxiety

Source: Juneja et al., 1999; Camfield et al., 2014

3. Caffeine (Yes, in Tea Too!)

While tea has less caffeine than coffee, it works in harmony with L-theanine to:

• Sharpen alertness
• Support mental performance
• Deliver gentler, sustained energy

Source: Haskell et al., 2005; Bryan, 2008

Plus… Bonus Players

• Vitamins (like C, E, B complex): Support immune and nervous system health
• Minerals (potassium, magnesium, zinc): Help maintain hydration and support metabolism
• Flavonoids: Improve blood vessel function and combat inflammation
• Aromatic Oils: Add uplifting scent and unique flavour notes

These vary depending on the type of tea and how it’s grown, harvested, and brewed.

Here’s a breakdown of key bioactive components found in tea and their known benefits.

Component	Function	Main Tea Sources
Polyphenols (esp. catechins like EGCG)	Antioxidant, supports metabolism, anti-inflammatory	Mostly in green tea
Theaflavins	Antioxidant, blood sugar regulation	Black tea
L-theanine	Calming, improves focus, modulates caffeine	Green, white, shaded teas
Caffeine	Alertness, cognitive boost	All except most herbals
Flavonoids	Heart protection, vascular support	All tea types
Tannins	Antibacterial, astringent	Black and oolong tea
Saponins	Cholesterol-lowering, immunity support	Dark teas, fermented teas
Polysaccharides	Gut and liver support	Dark teas, Pu-erh

Sources: Zhong et al., 2020; Hayat et al., 2015; Liu et al., 2021.

A Final Note from TEATUNE

We don’t just select tea for taste — we harmonise every blend for wellness. Like a tuner choosing each note with care, we source teas that deliver both flavour and function.

Whether we crave calm, energy, or comfort, what’s in our cup is more than hydration — it’s a healthful habit that supports the rhythm of our life.

Keep Exploring:

• How Tea Flows Through Our body →
• The Nutrients in Tea →
• Tea Types & Traditions →