Anyone know what is the suitable preservative for ';ROJAK'; cream which is black in colour and made of prawn?

ROJAK is one kind of food in Malaysia. It is a food which mixed up prawn cream with fruits and vegetables. But unfortunely, this black cream just can stand for 1 week without any preservatives. Therefore, i wish i can find some preservatives which are suit for the black colour prawn cream. Can any one help me? Thanks for giving me some points.Anyone know what is the suitable preservative for ';ROJAK'; cream which is black in colour and made of prawn?
In food grade preservative, there are 2 types commonly used, BHA and Sulfites.





BHA is use in foods that contain high percentage of fats and oil. while Sulfites is used mainly for fruits and vegetables and also other usage in stopping the growth of bacteria.





As there are no natural way to produce BHA, so left only Sulfites as our choice.





Sulfites can be produce from lemon juice. Fresh squeeze lemon juice can provide plentiful of sodium bisulfite which is another name of Sulfites.





Well, there will make the rojak a little bit weird in taste but when you added rojak with fruits like pineapple, it would not make a lot difference then.





So, you make your own rojak, till wondering how to make those although i took rojak a lot of times.





Hope i answer your question, thank you for the time reading this.