(1) In juvenile plants, the relative amount of tannin increased in March, decreased in April and July, and increased again in October.

(2) Additionally, the content of another product of the phenyl propanoid pathway, tannin , was examined in buckwheat plants.

(3) This was because tannin , a chemical that gives tea and coffee a bitter taste, binds to certain ceramic and metal materials.

(4) This was destined to become part of the thick liquor in the tanning pits for leather, as Oak trees in particular have high levels of tannin in the bark.

(5) To counteract intestinal discharges probably caused by the calomel, surgeons administered tannin , sulphuric acid, or morphia.

(6) The two streams are known as blackwater creeks because tannin , released from the breakdown of leaves in the woods, darkens their waters.

(7) Rooibos tea contains no caffeine and is very low in tannin .

(8) Our perception of sweetness can be affected by a number of other factors, such as temperature, tannin and carbon dioxide, not to mention alcohol.

(9) Chipped chestnut wood and bark also were used as a source of tannin for the leather industry.

(10) Honeysuckle imparts a raw sweetness with hints of tannin .

(11) The result is a fruity wine, high in aromatics and low in tannin .

(12) The tannin extracted from the bark and wood was important in the leather industry.

(13) If leeching tannin is the problem, a good sealer is the answer.

(14) Another common problem with cedar, redwood and certain other species is a natural resin in the wood called tannin .

(15) If you take any grape - black, red or green - and slice it through the middle it looks much the same: the stalk is woody and full of a substance called tannin .

(16) The association of tannin with caffeine allows the caffeine to be released slowly into the blood.

(17) The immature grain of these hybrids is high in tannin and quite bitter.

(18) It must be eaten ripe, since latex and tannin present in the unripe fruit give it an unpleasantly astringent taste.

(19) The caffeine and tannins in tea, coffee and colas are also dehydrating agents, so don't drink more than a two cups a day.

(20) In contrast, caffeine binds with phenols and tannins , thus neutralizing these effects.