Open AccessPenentuan Sistem Pengadaan Bahan Baku Utama Berbasis Kontrak pada Perusahaan Roti dan Kue-Kue ANDALAS
Author(s) -
Irma Felicia,
Carles Sitompul,
Paulina Kus Ariningsih
Publication year - 2021
Publication title -
jurnal rekayasa sistem industri/jurnal rekayasa sistem industri
Language(s) - English
Resource type - Journals
eISSN - 2339-1499
pISSN - 0216-1036
DOI - 10.26593/jrsi.v10i1.4210.35-44
Subject(s) - purchasing , business , agricultural science , raw material , warehouse , purchasing decision , marketing , chemistry , environmental science , organic chemistry
Micro, small and medium enterprises (MSME) are striving to maximize profits through cost’s reduction while maintaining their product qualities and their customer’s satisfaction. ANDALAS is an MSME producing cakes and breads that intuitively purchase its raw material which results in a relatively high purchase cost. We propose a contract-based system using a linear programming approach to manage the purchasing activities of main ingredients. A mathematical model is proposed supporting the purchasing decisions which includes constraints such as: minimum purchase, safety stock, warehouse capacity, and demand’s requirements. The resulting model provides an improvement of 6,30% reduction in purchase costs. The improvement for each ingredient ranges from 4% to 16% where Eggs, Flour, Maizena, Margarine, Butter and Sugar are contractually ordered from one main supplier.