Menentukan Ketuaan Buah Durian Berdasarkan Sifat Ultrasoniknya

Bambang Haryanto(1*), Hadi K. Purwadaria(2), I. Wayan Budiastra(3), A. Trisnobudi(4)

(1) Direktorat Teknologi Agrindustri BPPT
(2) Jurusan Teknik Pertanian, Fakultas Teknologi Pertanian, IPB, Bogor
(3) Jurusan Teknik Pertanian, Fakultas Teknologi Pertanian, IPB, Bogor
(4) Jurusan Teknik Fisika, ITB, Bandung
(*) Corresponding Author


The research was conducted to determine the maturity of durian through ultrasonic properties. For this purpose, a measurement system based on ultrasonic method was developed and controlled by a PC computer. An interface PC Lab Card was used to transfer the signal stored in the digital oscilloscope to the Personal computer. Twelve mature durians of (95 ± 3) days after fullbloom and 12 immature durians of (70 ± 3) days after fullbloom were used to determine the velocity and the attenuation. The result showed that attenuation and velocity wave of mature durians were 9.256 ± 1.077 dB/cm and 501.62 ± 44.28 m/sec, whereas the attenuation and velocity of immature ones were 6.279 ± 0.772 dB/cm and 422.36 ± 33.68 m/sec. The relationship between velocity wave of whole durians and, firmness, and velocity wave with total soluble solid were linear and significant (r2= 0.82 and r2= 0.73, respectively). Meanwhile the relationship between attenuation, and firmness, and attenuation with total soluble solid were exponential with correlation r2= 0.69 and r2= 0.67, respectively. The firmness and total soluble solid of durian flesh has strong correlation (r2= 0.92)

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agriTECH (print ISSN 0216-0455; online ISSN 2527-3825) is published by Faculty of Agricultural Technology, Universitas Gadjah Mada in colaboration with Indonesian Association of Food Technologies.

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