This document provides an overview of postharvest physiology and technology (TPP-2612) at the undergraduate level. It begins with introductions to food science, technology, and related fields. It then discusses key aspects of postharvest physiology like respiration, ethylene production, chilling injury, and fruit ripening processes. Environmental factors that influence postharvest quality like temperature, oxygen, and packaging are also examined. The document presents data on postharvest losses in developed and developing countries. It concludes with examples of postharvest handling techniques and potential research topics related to extending shelf life and quality of fresh produce.
4. TEKNOLOGI PANGANTEKNOLOGI PANGAN
DAN HASIL PERTANIANDAN HASIL PERTANIAN
BAHAN DASAR
HASIL PERTANIAN
BAHAN
PANGAN/OLAHANP-1
ILMU TERAPANILMU TERAPAN
Mudah Rusak
Musiman
Bulky
Nilai Ekonomi Rendah
Jangkauan Pasar
Terbatas
Lebih Awet
Sepanjang Tahun
Hemat Tempat
Nilai Ekonomi Tinggi
Jangkauan Pasar
Luas
P-2 P-3
Kimia
(Mikro) Biologi
Fisika
Matematika
Biokimia
Rekayasa
Bioteknologi
ILMU DASARILMU DASAR
ILMU PANGAN:
Food Chemistry
Food Microbiology
Food Analysis
Food Engineering
Food Processing
TEKNOLOGI PANGAN
5. PROFIL NILAIPROFIL NILAI
Fisiologi & Teknologi PascapanenFisiologi & Teknologi Pascapanen
Komponen 2007/2008 2008/2009
Jumlah
Mhs
75 (100%) 14 (100%)
Nilai A 40 (54,05%) 9 (64,29%)
Nilai B 24 (32,43%) 4 (28,57%)
Nilai C 9 (12,16%) 1 (7,14%)
Nilai D 1 (1,35%) 0
Nilai E 0 (0%) 0
6. ATURAN PENILAIAN
Sumber Nilai
Nilai
(N)
Bobot (B)
Nilai Akhir
(NxB)
Nilai Huruf
Kehadiran Minimal 75 % A : 80
B : 70 79
C : 60 69
D : 45 59
E : 44
Quiz N1 10 % 0,10 x N1
Tugas / PR N2 20 % 0,20 x N2
Sisipan dan
Ujian Akhir
N3 70 % 0,70 x N3
Total 100 % 100
Keterangan : Kehadiran mahasiswa minimal 75 % dari total kuliah.
N1, N2 dan N3 maksimal masing-masing 100
7. REFERENSIREFERENSI
ER. B, Pantastico. (1989). Fisiologi Pascapanen
(terjemahan Prof. Ir. Kamarijani). Gadjah Mada
University Press.
Amalendu Chakraverty. (2001). Postharvest
Technology. Science Publisher, Inc.
Journal : Journal of Agricultural and Food
Chemistry, Food Chemistry, Journal of Food
Science, Food Technology.
Others
13. Populasi penduduk dan penyediaan pangan duniaPopulasi penduduk dan penyediaan pangan dunia
Kehilangan pascapanen :Kehilangan pascapanen :
Negara maju : 5 25%
Negara berkembang : 20 50%
16. Figure 1. Principal marketing and distribution channels for fresh fruit, vegetables and root crops
17. Di negara maju, susut off farm dari :
- grain/biji : 3,62 %
- buah : 5,42 %
- sayuran : 10,3
Tidak termasuk susut saat :
- sorting
- grading
- packaging
- storage
- whole sale marketing
Macam susut :
- fisik
- mekanik
- quantity
- nutritional
- harga Sumber : Murdiati Gardjito, 2010
18. Production and Loss in Less Developed Countries
Commodity Production
(1,000 tonnes)
Estimated Losses
(% of total crop)
Roots/tubers
- Carrots (Daucus carota, L.)
- Potatoes (Solanum tuberosum, L.)
- Sweetpotatoes (Ipomoea batatas, (L.) Lam.)
- Yams (Dioscorea spp.)
- Cassava (Manihot esculanta, Crantz.)
557
26,909
17,630
20,000
103,486
44
5-40
35-95
10-60
10-25
Vegetables
- Onions (Allium cepa, L.)
- Tomatoes (Lycopersion esculentum, Mill.)
- Plantain (Musa spp.)
- Cabbage (Brassica oleracea, L. Capatita group)
- Cauliflower (Brassica oleracea, L. Botrytis group)
-Lettuce (Lactuta sativa, L.)
6,474
12,755
18,301
3,036
916
-
16-35
5-50
35-100
37
49
62
Fruits
- Bananas (Musa spp.)
- Papayas (Carica papaya, L.)
- Avocados (Persea americana, Mill.)
- Peaches (Prunus persica, (L) Batsch.)
- Apricots (Prunus meniaca, L.)
- Nectarines (Prunus persica var.
nucipersica, (Suckow) Schneid.)
- Citrus (Citrus spp.)
- Grapes (Vitis vinifera, L.)
- Raisins (Vitis vinifera, L.)
- Apples (Malus sylvestris, Mill.)
36,898
931
1,020
1,831
22,040
12,720
475
3,677
20-80
40-100
43
28
20-95
27
20-95
14Sumber : Murdiati Gardjito, 2010
19. Proses FisiologisProses Fisiologis
Contoh : Proses Pematangan Pisang
1. After harvest, the product is dependent entirely on its own food reserves and water
content. Losses of water and substrates used in respiration can no longer be
replaced and deterioration of the product begins
2. Fruit ripening involves many complex changes, including seed maturation, color
changes, abscission from the parent plant, tissue softening, volatile production, wax
devel-opment on skin, and changes in respiration rate, ethylene production, tissue
permeability, carbohydrate composition, organic acids and proteins
28. Sifat alami komoditas setelah dipanen
organ, bagian yang hidup terjadi proses metabolisme
suplai air dan mineral dari inangnya berhenti
fotosintesis terganggu dan berhenti
panenan membuat luka
pengemasan dan transportasi kerusakan fisik
lingkungan komoditi dapat memberikan stess suhu dan
atmosfir komoditi akan mempertahankan diri
melawan stress
Penanganan Pasca Panen
memberi kondisi terbaik agar komoditi dapat
mempertahankan diri terhadap kondisi lingkungan yang
baru
29. Wujud Penanganan
Aspek suhu memerlukan proses metabolisme tetapi
tidak terjadi kerusakan pada suhu rendah
Aspek oksigen memerlukan respirasi aerob tetapi
jangan sampai terjadi respirasi anaerob
Aspek tekanan dalam pengemasan : mencegah goncangan,
tetapi tidak menyebabkan kerusakan karena tertekan
Susut Pasca Panen
Susut pasca panen perubahan atas jumlah dan mutu
sehingga mengganggu penggunaan dan menurunkan nilai
ekonomis suatu bahan
30. Internal BahanInternal Bahan
Komposisi kimia
Fisiologi:
Respirasi
Transpirasi
Etilen
Komponen
lain (pigmen,
dll)
EksternalEksternal
(lingkungan):(lingkungan):
Iklim
Teknik Budidaya
Suhu
Waktu
Humidity
Gas (O2, CO2, CO)
Pengemasan
Penyimpanan
Quality
Quantity
Economy
Safety
Accessability
Korelasi
1. Understand the
biological and
environmental
factors involved in
this breakdown; and
2. Use postharvest
techniques that
delay senescence
Biological factors
Interaksi proses fisiologis dengan lingkungan bahanInteraksi proses fisiologis dengan lingkungan bahan
31. MakromolekulMakromolekul
organik :organik :
Karbohidrat
Protein
Lemak
RespirasiRespirasi
Respiration is defined as the process by which stored organic materials
(carbohydrates, proteins, fats) are broken down into simple end products
with a release of energy. Oxygen is used in this process and carbon
dioxide is liberated.
Oksigen
MikromolekulMikromolekul
organik :organik :
CO2
H2O
Energi
glucose oxygen carbon
dioxyde
water energy
C6H12O6 6O2 6CO2 6H2O 686 kcal+ + +
oksidasi reduksi
Required for
essential processes
within the cell
32. Trends in Plant PhysiologyTrends in Plant Physiology
Rekayasa Genetika
Proses fisiologis
New
Old
Weakness :
Low active substances
Low immunity
Low productivity
etc.
Strenght :
High active substances
(Antioxidants, vitamine, etc
High immunity (insect, etc)
High productivity
etc.
Tanam
33. Trends in Plant PhysiologyTrends in Plant Physiology
Postharvest
physiology
New
Internal Factors
External Factors
Technology
34. Pustaka
Kader, Adel, A. 1992. Postharvest Technology of Horticultural
Crops. UC Davis.
Kays, Stanley, J. 1991. Postharvest Physiology of Perishable Plant
Products. AVI Publishing. Van Nostrand Remliod. New York.
Weichmman, J. 1987. Postharvest Physiology of Vegetable. Marcel &
Dekker.
Wills, RHH, T.H. Lee, G. Graham. 1981. Postharvest Physiology of
Vegetable. New South Wales, University Press.
Chakraverty, A, G.S. Wijaya Raghava and Hossa Hali. S. Ramaswamy.
2003. Handbook of Postharvest Technology. Marcel & Dekker.
Bautista, O. 1980. Postharvest Technology of South East Asian
Perishables Fruit and Vegetables. UPCB.
35. TUGAS
Kelompok 1 Pengamatan masalah yang dihadapi oleh pedagang buah di Pasar Induk Buah dan
Sayur, Gamping (Jl. Wates)
Kelompok 2 Pengamatan masalah yang dihadapi oleh pedagang sayur di Pasar Induk Buah dan
Sayur, Gamping (Jl. Wates)
Kelompok 3 Permasalahan dan cara mengatasinya pada pemasaran sayuran dan buah di pasar
modern (supermarket)
Kelompok 4 Pengamatan kemasakan buah pisang dengan CaC2
dan bioethylene
Kelompok 5 Pengadaan, penanganan dan pemasaran minimally processed fresh fruit (buah
rujak dan buah dingin)
Kelompok 6 Pengamatan tekstur buah (nanas, bengkuang, pepaya, kedondong, mentimun,
mangga muda dan masak, jambu air, belimbing)
Kelompok 7 Pengamatan bagian yang dapat dimakan dari buah nangka, sirsak, srikaya,
salak; dan uraian tentang aromanya
Kelompok 8 Faktor penentu mutu buah salak pondoh : usulan grading standard dalam
pemasaran buah segar
Kelompok 9 Faktor penentu mutu buah manggis : usulan grading standard dalam pemasaran
buah segar
Kelompok 10 Upaya memperpanjang umur simpan sayuran selada air dengan air kelapa dan
penyimpanan dalam ruang lembab
Kelompok 11 Perkembangan warna buah tomat segar dalam suhu kamar dan refrigerasi
(ripening color chart of tomatoes)