Sharia Economic and Management Business Journal (SEMBJ)
Vol. 7 No. 1 (2026): Sharia Economic and Management Business

The Influence of Brand Image and Viral Marketing on Purchase Decisions of Kokumi Products in Medan Selayang District

Ida Royani (Universitas Medan Area)
Amalia Rivana (Universitas Medan Area)
Tohap Parulian Sihombing (Universitas Medan Area)



Article Info

Publish Date
19 Feb 2026

Abstract

Background: This research aims to determine the effect of brand image and viral marketing on the purchase desicion Kokumi products in Medan Selayang District. The focus of this research is to analyze how a brand is perceived by consumers and how strongly viral marketing strategies can encourage consumers to make transactions. Method: The sample in this research used purposive sampling, consisting of 100 respondents who had consumed Kokumi products at least twice. Data collection methods included interviews, questionnaires, and documentation studies. Data analysis techniques include descriptive statistics, classical assumption tests, multiple linear regression analysis, t-tests, F-tests, and the coefficient of determination (R²). Results: The results of this research show that brand image and viral marketing simultaneously have a significant effect on purchasing decisions. The tests conducted show that brand image and viral marketing partially have a positive and significant effect on purchasing decisions. The Adjusted R Square value on purchasing decisions was 0.872, meaning that 87.2% can be explained by brand image and viral marketing. Conclusion: The practical implications of this research indicate that Kokumi management can be more adapt to existing market changes, especially since the current F&B market competition is quite tight.

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Journal Info

Abbrev

sembj

Publisher

Subject

Religion Agriculture, Biological Sciences & Forestry Computer Science & IT Economics, Econometrics & Finance Education Other

Description

SEMB-J, sharia economic and management business journal is peer-reviewed journal published by Yayasan Darussalam Bengkulu. SEMB-J focus on the research of sharia economic and management business. The aim of this journal is to explore and develop economic management related to islamic and business. ...