Sifat Fisik Produk Pertanian

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1 SIFAT FISIK PRODUK PERTANIAN Oleh : Prof. Dr. Ir. Santosa, MP Guru Besar pada Program Studi Teknik Pertanian, Fakultas Teknologi Pertanian Universitas Andalas Padang, Mei 2009

Geometric Mean Diameter dan Sphericity Produk Pertanian GMD = ( MID x MOD x MAD )1/3 ..................................... (1) Sph = GMD/MAD ................................................................ (2) dengan : GMD

= Geometric Mean Diameter Produk Pertanian (mm)

MID

= Ukuran Sumbu Terpendek Produk Pertanian (mm)

MOD

= Ukuran Sumbu Medium Produk Pertanian (mm)

MAD

= Ukuran Sumbu Terpanjang Produk Pertanian (mm)

Sph

= Kebulatan (Sphericity) (tanpa dimensi satuan)

Densitas Produk Pertanian ρpp = ρair x A / ( C - B ) ................................................ (3) dengan : ρpp

= Densitas produk pertanian (kg/l)

ρair

= Densitas air ( = 1 kg/ l )

A

= Berat produk pertanian di udara (kg)

B

= Berat mangkuk + air (kg)

C

= Berat mangkuk + air + produk pertanian (kg)

Hubungan antara Porositas, Bulk Density, dan Berat Jenis Produk Pertanian n = 1 - ( Bv / Bj ) ................................................................... (4) dengan : n

= porositas (tanpa satuan)

Bv

= Bulk density (kg/m3)

Bj

= Berat jenis (kg/m3)

2 DAFTAR PUSTAKA Santosa. 2005. “Aplikasi Visual Basic 6.0 dan Visual Studio.Net 2003 dalam Bidang Teknik dan Pertanian”, ISBN : 979-731-755-2, Penerbit Andi, Edisi I Cetakan I, Yogyakarta.

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