Presentday Cultivation And Usage

Despite increasing cultivation of litchi in other countries, China still has the highest production output of this fruit. In China, the area of cultivation of litchi was 580,800 ha and the annual production 1.44 million tonnes in 2005, accounting for about 70% of the world production. With the improvement of postharvest technology, fresh litchi fruit can be stored for about 30 days at a low temperature (Jiang et al., 2006), which makes it possible for consumers throughout the world have a chance to taste this special fruit. In addition, more

TABLE 82.1 Anticancer Activities of 50% (v/v) Ethanol Seed Extract Obtained from Litchi Seeds

Sample

Concentration (mg/ml)

Cancer Cell Lines

SGC—7901

HEPG-2

Inhibition (%) IC50 (mg/ ml) Inhibition (%) IC50 (mg/ml) Inhibition (%) IC50 (mg/ml)

50% Ethanol

100

68.2 i 1.9

77.92 i 1.4

45.9 i 3.2

116.40 i 1.8

39.57 i 0.95

137.87 i 3.2

seed extract

50

25.5 i 6.6

29.5 i 0.3

25.2 i 1.8

25

10.1 i 0.1

25.3 i 6.3

18.8 i 3.3

12.5

NA

20.5 i 1.8

NA

Cisplatin*

100

63.9 i 4

58.03 i 2.2

49.57 i 1.3

101.3i3.2

55.37 i 2.1

87.9 i 2.3

50

34.26 i 0.3

29.78 i 1

33.27 i 2.1

25

19.44 i 1.8

19.89 i 1.8

22.22 i 2.5

12.5

12.03 i 2.1

14.94 i 2

18.0 i 2.7

The 50% ethanol seed extract showed good cytotoxity against three cancer cell lines. Data were expressed as means ± standard deviations of three replicate determinations. IC50 value represents the concentration of the tested sample to kill 50% of the cancer cells. NA, no activity;

*Positive control; SGC-7901, human gastric carcinoma; A-549, human lung adenocarcinoma; and HepG-2, human hepatocellular liver carcinoma cell line.

The 50% ethanol seed extract showed good cytotoxity against three cancer cell lines. Data were expressed as means ± standard deviations of three replicate determinations. IC50 value represents the concentration of the tested sample to kill 50% of the cancer cells. NA, no activity;

*Positive control; SGC-7901, human gastric carcinoma; A-549, human lung adenocarcinoma; and HepG-2, human hepatocellular liver carcinoma cell line.

litchi-derived food is being produced in the market, including litchi wine, juice, ice-cream, and yoghurt (Li, 2008). Litchi seed is also processed into traditional Chinese medicines, for medical treatment.

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