Abstract
Innovations in food manufacturing support the agenda for sustainable development goal 9 (SDG9) on industry, innovation and infrastructure. Pursuant to this goal, this study aims to develop an automated multi-spit lamb rotisserie machine that potentially improves the lamb-roasting productivity for small and medium enterprises (SMEs). The conceptualisation involved patents, scholarly literature and product reviews of lamb-roasting devices. The design and analysis are performed using Autodesk Inventor 2019. A scaled-down prototype is developed and tested with (1) roasting output, (2) roasting time and (3) temperature stability tests. The data for test (1) are analysed by comparing the means between control and experimental groups. The data for tests (2) and (3) are analysed using the t-test and Mann–Whitney U test, respectively. Significant differences are observed in tests (1) and (2), with outcomes being in favour of the proposed invention. The prototype cooks 92.27% faster with 700% more meat than a regular lamb roaster. It also cooks at a stable temperature. The cost analysis indicated that this invention could be sold at USD 278 if mass-produced. The design is structurally simple, inexpensive and easy to manufacture, allowing SMEs that rely on traditional spit-based machines to enhance their ability in producing roast lamb.
Highlights
Innovation- and productivity-driven small and medium enterprises (SMEs) play an important role in propelling the advancement of middle-income countries to high-income nations [1,2,3]
In Malaysia, SMEs are the drivers of the economy, accounting for 38.9% of the country’s GDP in 2019, which is an increase of 0.6% from 2018 [3,4]
The results indicate that the automated multi-spit lamb rotisserie machine prototype is significantly more productive than a regular lamb-roasting set-up which only produces one roast lamb at a time
Summary
Innovation- and productivity-driven small and medium enterprises (SMEs) play an important role in propelling the advancement of middle-income countries to high-income nations [1,2,3]. For food sector SMEs, there is a need to develop smart, energy-saving and cost-saving technologies in supporting the United Nation’s objective for SDG 9 (industry, infrastructure and innovation) [5,6,7]. One of the growing food SMEs in Malaysia includes the lamb-roasting industry. Known as Kambing Golek in Malay, is a dish where a whole lamb is roasted on a rotisserie machine. This dish has a deep cultural significance in Malaysia and Indonesia, especially during the Eid al-Adha festival where roast lamb is often prepared for the celebration [8]
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