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含维C水果大排行 (ZT)

(2006-12-29 09:57:15) 下一个
新研究发现,维生素C不仅能抗坏血酸,还能消除疲劳,增强抵抗力,预防感冒,对防癌治癌也有好处。因此,在国外曾掀起过“维生素C热”。

提到维生素C,许多女性就不由自主地想到水果,甚至有人认为只要经常吃水果,就不会缺乏维生素C,其实这种看法是片面的。据有关资料表明,猕猴桃、鲜枣、草莓、枇杷、橙、橘、柿子等含有丰富的维生素C。

据测定,成人一天需要60毫克维生素C,假如要从维生素C含量很少的水果中摄取,则无花果需要25个,梨子需要14个,葡萄需要1.5公斤左右。因此,只吃一两个维生素C含量少的水果,实际上并没有什么帮助。可是,如果是含维生素C较高的猕猴桃、柑橘或柿子,一天一两个就够了。如果是鲜枣或草莓,只要五六粒,即可摄取到一天所需的维生素C。所以,要想补充足够的维生素C,吃水果时应有所选择。

另外,还有一些因素影响着水果中维生素C的含量。比如,一些水果为了预防虫害及日晒,在生长过程中,常用纸袋包裹起来,结果造成维生素C含量减少;此外,水果存放的时间越长,维生素C的损失就越多。


Fruit

mg vitamin C

/ 100 grams

mg vitamin C

per average

size fruit/slice*

Ranking

**Acerola

1,677

80

exceptional*

Apple

6

8

fairly good

Apricot

10

4

-

Apricot, canned

3

2

-

Asian pear

4

5

-

Avocado

8

16

fairly good

Banana

9

11

good

Babaco

21 to 32

21 to 32

very good

Barbados Cherry

1,678

112

exceptional

Bilberry

1

0.01*(estim)

-

**Baobab

150 to 499

100

exceptional

Breadfruit

29

28*

very good

Blackberry

6

0.6(estim)

-

Blackcurrant

155 to 215

1.5 to 2*(estim.)

excellent

Blueberry

1.3 to 16.4

no data*

-

**Camu Camu

2,700

no data

astounding

Carambola

21

19

very good

Casimiroa

30

15*

very good

Crabapple

8

2 (estim.)

-

Cherimoya

9

10*

fairly good

Custard apple

19

no data

very good

Feijoa

25

13

good

Feijoa

31

16

very good

Feijoa

27

14

good

Fig

2

1

-

Grape, slip skin

4

. 01

-

Grape, european

11

. 60

good*

Grapefruit

34

44*

excellent

**Guava, Cattley

37

2

very good*

Guava, tropical

183

165

exceptional

**Java plum

14

. 42

-

Jujube

500

no data

exceptional*

**Kei apple

117

17

excellent*

Kiwano ™

0.5

0.5

-

Kiwifruit, green

98

74

exceptional

Kiwifruit, yellow

120 to 180

108 to 162

exceptional

Lemon juice

46

3*

-

Lime juice

29

1*

-

Longan

84

3*

good

Loquat

1

.5

-

Lychee

72

7*

very good

Mango

28

57

excellent

**Marula

68

60(estim)

excellent

Medlar

0.3

0.15(estim)

-

Melon, cantaloupe

42

29*

very good

Melon, honeydew

25

20*

very good

**Muntingia

80

4*(estim)

excellent

**Natal plum

38

8

good

Orange

53

70

excellent

Opuntia cactus

23

no data

very good?

Papaya

62

47*

excellent

**Pawpaw/Asimina

14

28(estim)

good †

Passionfruit, purple

30

5

-

Peach

7

6

-

Peach, canned

3

3

-

Pear

4

7

-

**Persimmon, American

66

13*(estim.)

excellent

Persimmon, Oriental

40

40*(estim.)

excellent

Pineapple

15

13

good

Plum

10

6

fairly good

Raspberry

25

. 5

-

Raspberry

23 to 32

0.7 to 1*

very good

Redcurrant

58 to 81

0.58 to 0.81*(estim)

good

Rosehip

1,500

45(estim.)

excellent

Rosehip

1,150

34(estim.)

very good

Rosehip

2,000 to

2,500

60 to 75(estim.)

excellent

** Surinam cherry

26

2

-

Sapodilla

15

25

very good

Strawberry

57

7*

very good

Tangerine/Mandarin

31

26

very good

Tamarillo, red

40

40

excellent

Tamarillo, red

31

22

very good

Tamarillo, yellow

33

30

very good

Tamarillo, yellow

31

22

very good

Tomato

19

23

very good

Watermelon

10

27

very good



    值得一提的是,尽管一些人吃了许多富含维生素C的水果,但是有嗜烟的恶习,由于吸烟可阻碍人体对维生素C的吸收,烟草中的尼古丁对维生素C还有破坏作用。因此,也容易缺乏维生素C。 所以,水果不能作为人体维生素C的唯一来源,必需时应加服维生素C药片才行。
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