Journal List > J Nutr Health > v.46(4) > 1081300

J Nutr Health. 2013 Aug;46(4):324-331. Korean.
Published online August 31, 2013.
© 2013 The Korean Nutrition Society
Effect of green tea intake on blood lipids, platelet aggregation, antioxidant and liver parameters in Jeju volunteer diving woman
Mi-Sook Kim,1 Min-Sook Kang,2 Sung-Hee Ryou,1 Young-In Moon,3 and Jung-Sook Kang1
1Department Foods & Nutrition, Jeju National University, Jeju 690-756, Korea.
2Nutrition Service Team, Jeju National University Hospital, Jeju 690-767, Korea.
3Jeju Agricultural Development and Technology Extention Center, Jeju 695-971, Korea.

To whom correspondence should be addressed. (Email: )
Received June 20, 2013; Revised July 09, 2013; Accepted August 06, 2013.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.


We investigated dietary effects of green tea powder (GTP) on plasma lipids, platelet aggregation, hemolysis, plasma TBARS, and liver enzymes. Thirty one volunteer diving women living on Jeju island consumed 4 g green tea powder daily for a period of four weeks and data for the study subjects were analyzed on the basis of diagnostic criteria for blood pressure (BP)(≥ 140/90 mmHg), plasma total cholesterol (TC)(≥ 200 mg/dL), and triglyceride (TG)(≥ 150mg/dL). Subjects with high BP had significantly higher TC and TG than those with normal BP. Subjects with higher TC had higher TG, and those with higher TG had lower HDL cholesterol. Platelet aggregation in the initial slope was significantly higher in subjects with normal BP, normal TC, or normal TG than their counterparts in high BP, TC, and TG. HDL cholesterol after GTP intake increased only in subject groups with normal BP, normal TC, or normal TG, and plasma TG after GTP intake decreased only in groups with higher BP, higher TG, or higher TC. Plasma TC and TG in subjects with normal BP increased after GTP intake. GTP intake caused a decrease in the initial slope of platelet aggregation in all subject groups with little effect on maximum aggregation. Total bilirubin showed a significant increase and GOT increased in all subject groups after GTP intake. Beneficial effects of short term intake of green tea powder might differ depending on the subject conditions in terms of blood pressure, plasma lipids, and other cardiovascular conditions. However, with the hypolipidemic, antithrombotic, and antioxidant actions of its bioactive flavonoids, long term usage of GTP or brewed green tea may provide preventive effects against cardiovascular disease.

Keywords: green tea powder; hypolipidemic; antithrombotic; antioxidant; women


Fig. 1
Comparison of plasma lipids before and after green tea powder intake based on diagnostic criteria for blood pressure (BP), total-cholesterol (T-chol), and triglyceride (TG).

*: p < 0.05.

Click for larger image

Fig. 2
Comparison of hematocrit and platelet aggregation before and after green tea powder intake based on diagnostic criteria for blood pressure (BP), total-cholesterol (T-chol), and triglyceride (TG).

*: p < 0.05.

Click for larger image

Fig. 3
Comparison of hemolysis and plasma TBARS before and after green tea powder intake based on diagnostic criteria for blood pressure (BP), total-choleserol (T-chol), and triglyceride (TG).

*: p < 0.05.

Click for larger image

Fig. 4
Comparison of plasma GOT, GPT, alkaline phosphatase, and T-bilirubin before and after green tea powder intake based on diagnostic criteria for blood pressure (BP), total-cholesterol (T-chol), and triglyceride (TG).

*: p < 0.05, **: p < 0.01.

Click for larger image


Table 1
Comparison of clinical data based on diagnostic criteria for blood pressure, plasma T-cholesterol and triglyceride before green tea powder intake
Click for larger image

Table 2
Plasma lipids, hematologic parameters, platelet aggregation and pathological indices of the study subjects before and after green tea powder intake
Click for larger image


This is a partial work supported by the Korea Research Grant (R05-2001-000-00718-0).

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