according to Horticulture the chemical which is responsible for punjency in onion is – Allyl Propyl Disulphide
and according to plant pathology-the chemical compound in Red onions responsible for Resistance to smudge disease is a phenolic Compound- Protocatechuic acid, Catechol
I think it’s sulphur
May be Amino acid
disulphide
Onions contain catechol and procatecheuic acid
thanks
salphuric acid H2SO4
thanks for answer
Anthocynin
sulfenic acid
Sufenicacid
Salphar
S
quecertin-for yellow colour
catechol – anti fungal
allyl propyl disulphide- pungency
Sulphur compound
sulfenic acid
allyly propyl. allicin
Good
amino acids
amino acids (protein)
what is chemical contain in onion
allenin
Allyl propyl disulfide(sulphur compound)
live
sulphur
Sulphur alyl compound
sulphide
allyl propyl disulphide
H2SO4 SLAFAR ACID
Alicin
sulphur
allicin
sulfenic acid
amino acids
alicin
alayal propayal dimethyl
allyl propyl disulphide
according to Horticulture the chemical which is responsible for punjency in onion is – Allyl Propyl Disulphide
and according to plant pathology-the chemical compound in Red onions responsible for Resistance to smudge disease is a phenolic Compound- Protocatechuic acid, Catechol
sulphur
Syn-propanethial-S-oxide