Determination of physical properties of siamese oranges (Citrus nobilis var. Microcarpa): sphericity, roundness, volume, and density

Authors

  • Emi Kurniawati Prodi Teknologi Industri Pangan, Jurusan Teknologi Pertanian, Politeknik Negeri Jember
  • Ade Galuh Rakhmadevi Prodi Teknologi Industri Pangan, Jurusan Teknologi Pertanian, Politeknik Negeri Jember
  • Putu Tessa Fadhila Prodi Teknologi Industri Pangan, Jurusan Teknologi Pertanian, Politeknik Negeri Jember
  • Syarifatul Lailah Prodi Teknologi Industri Pangan, Jurusan Teknologi Pertanian, Politeknik Negeri Jember

DOI:

https://doi.org/10.31764/jafp.v3i2.20423

Keywords:

density, roundness, siamese oranges, sphericity, volume

Abstract

Siamese oranges are a member of the tangerines which have the scientific name Citrus nobilis var.Microcarpa. It is called Siamese orange because it comes from Siam (Muangthai). The quality of Siamese oranges is determined by their physical properties. These physical properties include size, weight, volume and diameter. Post-harvest technology for Siamese oranges can be done by grading to obtain quality Siamese oranges according to standards. This research aims to determine the physical properties of Siamese oranges used in the grading process. Determination of sphericity and roundness is measured using a caliper. Determination of volume and density is measured using a beaker. Analysis of research data used a one-way z-test normal distribution to the left. The results of data analysis show that the z-count value of roundness, roundness, volume and density is 1.05; 0.79; 0.55; 0.53 and -ztable of -1.645. This means zcount ≥ -ztable, where the average value of the physical properties of Siamese oranges is greater than or equal to the research object, roundness is 0.92, roundness is 0.93, volume is 87 cm3 and density is 1.02 g/ cm3. Thus, the results of these physical properties can be used as a reference when grading Siamese oranges code size 2.

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Published

2023-12-31

Issue

Vol. 3 No. 2 (2023)

Section

Articles

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