How Six Sigma Can Increase Plant Food Safety and Profitability

I just gone through this article, which explains ,How six sigma can increase plant food safety and profitability. 

https://www.foodsafe...profitability/ 

I have been reading and researching this for weeks now.

i have come across this thesis,

http://centralspace.....pdf?sequence=1

Dear Himanshu

Sis sigma is a continuous improvement methodology based on statistical analysis of data. The goal is to eliminate defects either in your process or product. As we got specification limits in terms of food safety or in terms of customer specifications six sigma help us not to exceed those limits; and moreover, help us to manufacture similar and homogeneous products at any time and all the time. For this last reason it is said that six sigma is focused on variation reduction. Six sigma concept is aligned with the lean manufacturing concept.

Regards

Esther