Jurnal Agribisnis Wijaya Putra Surabaya AGRIWITAS

Analysis of the Application of HOQ (House of Quality) in Improving the Quality of Tofu Products in the Home Industry Ridho Ilahi Sidoarjo

Jihan Yumna Martha Laily — 2026-03-31

Home Industry “Ridho Ilahi” is one of the tofu producers located in Dusun Areng-Areng RT.01 RW.02, Tropodo Village, Krian District, Sidoarjo Regency. This business faces intense competition due to the large number of similar tofu businesses in the surrounding area. The purpose of this study is to identify the quality attributes that need improvement, determine the technical response attributes that require enhancement, and compare the position of the producer's product with that of its competitors. The product used in this study is tofu from Home Industry Ridho Ilahi, while the comparison products are tofu from Solikah Mulyo Barokah and Rudi Jaya. This research uses the Quality Function Deployment (QFD) method with the analytical tool House of Quality (HoQ). Based on the analysis results using the House of Quality (HoQ), the priority quality attributes that need improvement are product packaging, color, product design, and the range of purchase locations. The prioritized technical response attributes for improvement in Ridho Ilahi’s tofu production are the cooking process and storage, as these have a significant impact on the quality of the tofu product. The company is advised to improve product quality by enhancing both quality attributes and technical response attributes, and by conducting regular monitoring of the company's production process standards, in order to produce tofu products that are high-quality and meet consumer expectations.

Analysis of Soybean Inventory Control at H. Karlim Tempe Home Industry using the Economic Order Quantity Method Approach

Nur Anisa — 2026-04-02

H. Karlim’s Tempe Home Industry did not have an appropriate method to optimally calculate raw soybean inventory. This home industry frequently purchased an additional 100 kg to 200 kg of soybeans, which caused an extra burden in raw material procurement. This research used a quantitative descriptive approach that aimed to describe a phenomenon systematically, measurably, and objectively using numerical data. The study applied several analytical techniques, including the EOQ method, safety stock, reorder point, and total inventory cost to compare soybean inventory control using the conventional method with the Economic Order Quantity (EOQ) method. The required data included soybean order data, soybean usage, ordering costs, and storage costs during the period from April 2022 to March 2023. The results of the study showed that the optimal frequency of soybean orderis was 13 times per year, with an order quantity of 2.616 kg based on the EOQ method. Reordering was done when the raw materials stock in the warehouse reached 347 kg. The total inventory cost of raw materials that the home industry had to incure was Rp. 2.720.710.

Analysis of Inventory Control of Wheat Flour Raw Material Using the Economic Order Quantity Method at Maya Bakery Sidoarjo Regency

Siti Lailatul Mukasanah — 2026-04-02

This research was conducted at Maya Bakery, a business engaged in the production of traditional pastries and bread, using wheat flour as its primary raw material. Previously, inventory management of wheat flour at Maya Bakery was carried out conventionally based on estimation, without any structured method. This led to a high frequency of purchases, increased ordering costs, and the absence of safety stock, which posed a risk to the continuity of production. The purpose of this study was to analyze the control of wheat flour inventory using the Economic Order Quantity (EOQ) method. This study applied the EOQ method with several analytical techniques, including calculations of optimal order quantity (EOQ), order frequency, safety stock, reorder point, and total inventory cost. The analysis showed that the optimal purchase quantity using the EOQ method should have been 252 kg per order, with a frequency of 15 times per year. In addition, Maya Bakery should have maintained a safety stock of 28 kg and reordered when stock levels reached 39 kg. The total inventory cost using the EOQ method amounted to Rp 340,591, whereas the conventional method resulted in Rp 678,600. The EOQ approach proved effective in optimizing inventory control and reducing operational costs by Rp 338,009, representing a 50% cost saving. These findings indicated that the EOQ method was more efficient in raw material management compared to the company’s current practice.

Inventory Control of Tofu Raw Materials at “Ridho Ilahi” Home Industry Using the Economic Order Quantity� (EOQ)� Method

Siti Lailatun Ni'mah — 2026-04-02

This research aimed to compare the conventional method previously used with the EOQ method to reduce costs and improve the efficiency of raw material ordering by using soybean ordering and usage data throughout 2023. The EOQ method was implemented through five analytical techniques, including determining the optimal order quantity, calculating order frequency, setting safety stock, determining reorder point, and analyzing total inventory costs. The results showed that in 2023, the total soybean requirement reached 356.600 kg with an order frequency of 45 times and an average order quantity of 7.925 kg. Based on EOQ calculations, the optimal order quantity was 12,887 kg with a frequency of 28 orders per year. The company was also advised to maintain a safety stock of 1.810 kg and a reorder point of 2.793 kg. The total inventory cost before applying EOQ was Rp15.336.000. The application of the EOQ method reduced the inventory cost to Rp13.918.458, resulting in a cost efficiency of Rp1.417.542 or approximately 9%. These findings indicated that the EOQ method was effective in reducing inventory costs, optimizing the ordering process, and supporting uninterrupted production.