Answer

Yes, corn flour is generally allowed in Jain food, because corn is not a root vegetable.

If by “ara lot” you mean arrowroot, then strict Jains usually do not eat it, because it comes from a root/rhizome.

Explanation

In Jain dharma, the main food restriction is against root vegetables and foods that involve higher violence to living beings.

• Corn flour: usually acceptable
• Arrowroot: usually avoided in strict Jain diet
• Always also check whether the product has any added non-Jain ingredients

Spiritual Understanding

Jain eating is based on ahimsa and purity of diet. Even small choices in food are part of practicing self-discipline and compassion.

Takeaway

• Corn flour: yes
• Arrowroot: generally no, in strict Jain practice

If you want, I can also give you a simple Jain food allowed / not allowed list for daily use.