Often preservatives are added to certain food stuffs so that they stay consumable for a longer time but these preservatives are chemicals which may be harmful. What alternatives do you suggest?

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$C h e m i c a l p r e s e r v a t i v e s a r e h a r m f u l a s t h e c h e m i c a l s m a y p r o d u c e s o m e a d v e r s e e f f e c t w h e n u s e d f o r a l o n g t i m e . A l t e r n a t i v e t o t h i s i s n a t u r a l p r e s e r v a t i v e s l i k e v i t a m i n c, s l a t, s u g a r c a n b e u s e d . O r w e c a n u s e s o m e o f t h e t e c h n i q u e s l i k e 1 . R e f r i g e r a t i o n 2 . D e e p f r e e z i n g 3 . D r y i n g 4 . P a s t e u r i z a t i o n (h e a t t r e a t m e n t) 5 . P i c k l i n g 6 . S a l t i n g 7 . C a n n i n g (s e a l i n g i n c l o s e d c o n t a i n e r)$

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Food preservatives are used to keep food edible for a longer period of time.

Most of the preservatives are chemicals still we use them in our food to preserve .why?

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