Cyanogenic and Isothiocyanate glycosides

Question 1

Glycosides yielding hydrocyanic acid (HCN) as one of the products of hydrolysis

Answer 1

Cyanogenic glycoside

Question 2

Both amygdalin and prunasin yield __ as __.

Answer 2

mandelonitrile, aglycones

Question 3

Amygdalin is therefore a true glycoside rather than a maltoside True or False

Answer 3

True

Question 4

Amygdalin (enzyme) (product)

Answer 4

amygdalin hydrolase, glucose + prunasin

Question 5

Prunasin (enzyme) (product)

Answer 5

Prunasin hydrolase, glucose+ mandelonitrile

Question 6

Mandelonitrile (enzyme) (product)

Answer 6

Mandelonitrile lyase, benzaldehyde + HCN

Question 7

an enzyme obtained from almond kernels

Answer 7

Emulsin

Question 8

Emulsin two enzymes

Answer 8

Amygdalase, prunase

Question 9

Uses of emulsin

Answer 9

1. Flavoring agent

2. Anti cancer (laetrile or Vit. B17) and possibility for control of sickle cell anemia

Question 10

It is carefully dried stembark of Prunus serotina Ehrhart ( Fam. Rosaceae)

Answer 10

Wild cherry

Question 11

Wild cherry is also known as

Answer 11

prunus virginia and wild black cherry tree

Question 12

a compound formed by partial hydrolysis of

amygdalin

Answer 12

Prunasin

Question 13

The yield of hydrocyanic acid varies from __ in the inner bark, __ in trunk bark, varies even in bark of the same thickness from the same tree

Answer 13

0.23%- 0. 32%, 0.03%

Question 14

Wild cherry uses

Answer 14

Flavored vehicle especially in cough remedies

Sedative expectorant

Question 15

Kernels of varieties of Prunus armeniaca Linne. ( Fam. Rosaceae)

Answer 15

Apricot pits

Question 16

Does Prunus armeniaca Linne has a therapeutic effect?

Answer 16

None

Question 17

The seeds of several mustard family plants contain glycosides, the aglycones of which are isothiocyanates

Answer 17

Isothiocynate glycosides

Question 18

The glycosides are also termed

Answer 18

glucosinolates

Question 19

Mustard family (brassicaceae) which includes

Answer 19

• Oilseeds (rapeseed)
• Condiments (mustard and horseradish)
• Vegetables (broccoli, cabbage, and turnips)

Question 20

–derived from indolylmethylglucosinolate

- shown to reduce risk of estradiol- linked mammary cancer

Answer 20

indole- 3-carbinol

Question 21

• isolated from broccoli

- shown to induce anticarcinogenic protective enzymes

Answer 21

4- methylsulfinyl isothiocyanate

Question 22

from black mustard

Answer 22

Sinigrin

Question 23

from white mustard

Answer 23

Sinalbin

Question 24

from rapeseed

Answer 24

Gluconapin

Question 25

Black mustard also called

Answer 25

brown mustard, sinapis nigra

Question 26

Mustard is a dried ripe seeds of variety of

Answer 26

brassica nigra (linne.) Koch or of brassica juncea

Question 27

product in the hydrolysis of black mustard, it is volatile

Answer 27

Allyl isothiocyanate

Question 28

Allyl isothiocyanate commonly called

Answer 28

Volatile mustard oil

Question 29

Also called Sinapis Alba

Answer 29

White mustard

Question 30

Black mustard fixed oil

Answer 30

30-35%

Question 31

white mustard fixed oil

Answer 31

20- 25%