PHT 601 Research Techniques in Postharvest Technology 3 (2 - 3 - 7)
Prerequisite : Consent of the instructor

Laboratory and field approach to postharvest technological

research. Theoretical and practical aspects of techniques
use in qualitative and quantitative analysis of biological
materials. Discussion and demonstration of modern
instrumental methods currently available for measurement
of mechanical properties, physical characteristics and
physico-chemical constituents of agricultural products.
Planning and initiating research, review literature,
discussion on selecting project and experimental
procedures, recording data, analysis of data, interpreting
data and reporting orally and/or in scientific written style.

PHT 602 Statistics for Agricultural Research 3 (2 - 3 - 7)
Prerequisite: Statistics or consent of the instructor

Design of experiments and variance analysis necessary in
agricultural research. Experimental techniques in the field
and laboratory. Conducting research and management.
Recording data and analysis of data by using of general
statistical computer programs. Interpretation of experimental
data and reporting results.

PHT 611 Postharvest Losses of Agricultural Products 3 (3 - 0 - 9)
Prerequisite : Consent of the instructor

Causes, principles and practices responsible for losses of
agricultural products. Qualitative, quantitative, nutritional and
socioeconomic losses. Factors responsible for causing
agricultural products losses. Loss assessment and estimation
techniques and their limitations. Methods appropriate for
reducing losses in technologically advanced.

PHT 621 Postharvest Handling System of Perishable Crops 3 (2 - 3 - 7)
Prerequisite : Plant Physiology or Biochemistry or consent of the instructor

Biological, morphological and anatomical principles involving
physical movement of fresh produce from farm to consumer.
Quality components. Current technological procedures used
in harvesting and field operations, packaging system,
packinghouse operations. Standardization and quality control,
storage and preservation techniques, transportation and its
environment. Distribution system of fresh produce. Tropical
commodities emphasized.

PHT 622 Postharvest Physiology and Technology of 3 (2 - 3 - 7)
Perishable Crops Prerequisite : Plant Physiology or Biochemistry or consent of the instructor

Biochemical, biophysical and physiological changes of
harvested perishable crops and consideration of methods and
techniques to prolong life and maintain quality of perishable
commodities. Emphasis on the effects of storage facilities and
techniques, quality evaluation as related to physiological
mechanism controlling the maturation, ripening and
senescence of perishable commodities.

PHT 623 Postharvest Handling System of Ornamental Plants 3 (2 - 3 - 7)
Prerequisite: Plant Physiology or Biochemistry or consent of the instructor

Growing condition, harvesting and utilization of ornamental
plants. Structural, physiological and metabolic changes
associated with senescence of ornamental plants. Quality
evaluation and grading. Preservation techniques and factors
involving extent of postharvest life. Packaging system,
packinghouse operation, storage, transporatation and
marketing. Retail florist care and operation. Care of ornamental
plants in home.

PHT 631 Postharvest Handling System of Cereals and Grain 3 (3 - 0 - 9)
Legumes Prerequisite : Basic Thermodynamics or consent of the instructor

Interrelationship of temperature, moisture, molds and insects
in cereals and grain legumes in storage. Biochemical and
nutritive changes during storage. A complete systems and
methods for handling, drying and storage operation.
Facilities layout and facility management. Storage
conditions and method, storage pests and their control.
Structural environment design. Containers and transportation.

PHT 632 Postharvest Technology of Seeds 3 (2 - 3 - 7)
Prerequisite : Plant Physiology or consent of the instructor

Morphological and physiological changes during seed
formation, development, maturation and germination. Practical
and biological aspects of seed drying, storage, deterioration,
dormancy and quality. Included storage, cleanness, packing
and distribution. Seed certification under international rules.

PHT 651 Engineering Application for Postharvest Technology 3 (3 - 0 - 9)
Prerequisite : Basic Thermodynamics or consent of the instructor

Review of basic thermodynamics, fluid mechanics, heat transfer
and mechanics of materials. A study of unit operations pertaining to
processing of agricultural material, mechanical handling, conditioning
and storage of postharvest products. Cleanness, sorting, grading, sizing,
heating, cooling, drying and storage. Concepts on the design of processes
and equipments.

PHT 652 System Designs of Postharvest Equipments and Storage 3 (3 - 0 - 9)
Structures Prerequisite : Consent of the instructor

Application of fundamental principles used in engineering design
and development of postharvest handling systems. Consideration of the
interrelationship between the characteristics of the agricultural products
and the facilities, equipment and environment. Human factors in design,
flow processes diagram, design synthesis and concept development of
equipment, specific examples of machine design for postharvest processing
and computer aided design. Design, construction and management
of packinghouse and storage structures. Handling system and
environmental control of store structures.

PHT 653 Produce Packaging System 3 (2 - 3 - 7)
Prerequisite : Consent of the instructor Types of packaging materials and producing packages.

Physical and chemical properties of packaging materials.
Packing and packaging system. Preparing produce for
packaging. Mathematical models to produce packs.
Computerized pallet and container dimension. Wholesale and
retail produce packaging. Shipping containers and transport
system. Graphic and package design. Governmental
regulations, public health aspects associated with produce
packaging. Recycling.

PHT 661 Postharvest Insect Pest of Agricultural Products 3 (2 - 3 - 7)
Prerequisite : Introduction to Entomology or consent of the instructor

Biology, ecology, types of damage and behavior of stored
insect pests. Major insect pests, current practices in their
control of economic agricultural products. Postharvest insect
pests management of stored products.

PHT 662 Postharvest Pathology of Agricultural Products 3 (2 - 3 - 7)
Prerequisite : Introduction to Plant Pathology or consent of the instructor

Typical symptom characteristics and signs associated with
various postharvest diseases. Different groups of
microorganism that causes diseases. Diseases cycles,
source of infection, type of infection and infection
processes. Major postharvest diseases and their controls.
Some important seed pathology.

PHT 691 Seminar in Postharvest Technology I 1(0 - 2 - 7)
Prerequisite : Approval of department

Preparation, presentation and discussion of the
selected topics of interesting literature, techniques
and research pertaining to postharvest technology.
Attendance requires of all graduate students in
postharvest technology program.

PHT 692 Seminar in Postharvest Technology II 1(0 - 2 - 7)
Prerequisite : Approval of department

Preparation, presentation and discussion by graduate
students on current interests in postharvest technology
emphasized the topics in relation to thesis research.
Required of all graduate students in postharvest
technology program.

PHT 697 Selected Topics in Postharvest Technology 3 (3 - 0 - 9)
Prerequisite : Approval of department

Discussion and lectures on special aspects or advanced
topics of current interest in postharvest technology and not
included in other courses. Check departmental
annoucement for topics offered any given semester
or contact instructor for information.

PHT 698 Special Problem 3(0 - 3 - 9)
Prerequisite : Consent of the instructor

Investigation of selected problems of special interests in
postharvest technology to individual graduate student. The
research supervised by member of department. The work
includes library work, field or laboratory research, recording
data, analyzing data and writing of research paper.

PHT 699 Thesis 12 Credits
Prerequisite : Consent of the advisor or Graduate committee

Ms. degree candidate have to present the thesis proposal
and approval by the department. Intensive experimental
research on postharvest problems which may extend
throughout the year and furnish data under the supervision
of the advisor.

ET 683 Engineering Experimental Design and Analysis 3 (3 - 0 - 6)
Prerequisite : - Randomized block t-test, factorial and factorial design

confounding, response surface methodology. Mathematical
model building and nonlinear estimation; determination of
optimum condition.

ET 647 Refrigeration and Air Conditioning 3 (3 - 0 - 9)
Prerequisite : Thermodynamics

Reviews of processes, cycles and designs of refrigeration
and air conditioning systems. Absorption refrigeration with
emphasis on solar energy application. Theory and methods
of food freezing and preservation. Advanced studies of air
conditioning systems with environmental and economic
consideration.

ET 626 Drying of Foods and Cereal Grains 3 (3 - 0 - 9)
Prerequisite : Basic Thermodynamics and Heat Transfer

Moist air properties. Air movement. Equilibrium moisture
contents, thermo-physical properties of food and grains.
Grain drying systems. Rigorous and simplified analysis of
grain drying : single-kernel, thin layer, and deep-bed
grain drying. Analysis of food drying : fixed-bed and
moving-bed drying, spray drying, drum drying.

FdE 501 Food Science Concepts I 3 (3 - 0 - 9)
Prerequisite : None

Chemical composition of foods and their nutritive values,
the effect of food handling and processing on nutritional
qualities. The effect of water activity on food preservation.
Chemical analysis of food compositions, postharvest
technology of raw materials and it effect on processed
food qualities. The role of food additives in processing
and storage of food products. Important raw materials
and their products. Students are required to do additional
work from the current journals, finally, report and seminar
have to be done.

FdE 504 Technology of Food Preservation 3 (2 - 3 - 7)
Prerequisite : FdE 501 and FdE 504

Principles of food preservation. Preservation by heat, chilling,
freezing, irradiation and fermentation etc. Development of
current food processingtechnology. Food packaging and
packaging materials. Relevant practical examples from
Thai food industry are highlights.The depth of the materials
is at the level of first year graduate student in science.
Student are expected todo substantial amount of library research.

FdE 541 Drying of Foods 3 (3 - 0 - 9)
Prerequisite : FdE 511, FdE 512

Moist air properties. Air movement. Equilibrium moisture
contents, thermo-physical properties of food. Analysis of food
drying : fixed - bed and moving - bed drying, spray drying,
drum drying. Solar drying : natural and forced convection,
type of solar dryers. Mathematical modeling of drying process
and drying mechanics.

FdE 543 Packaging Technology 3 (3 - 0 - 9)
Prerequisite : FdE 504, FdE 662

Packing technology system, selection and protective test of
packages in relation to handling and transportation and its
impact, Affect of packages to the product quality. Types
and quality of material for suitable packages. Development
of the graphic and structural design of packages.

FdE 622 Physical and Engineering Properties of Foods and Biomaterials 3 (2 - 3 - 4)
Prerequisite : None

Principles involved in physical properties and measurement
of food texture, mechanical, thermal, electrical and optical
properties, and application to harvesting, handling, processing,
storage and quality evaluation, An integrated program of laboratory
designed to illustrate the principles presented in the lecture course.

MTH 672 Statistical Analysis I 3 (3 - 0 - 9)
Prerequisite : MTH 371 Statistics II or consent of the instructor

Tests of hypotheses : tests concerning means and difference
between two means, tests concerning proportion means and
difference between two proportions, tests concerning
variances, goodness of fit test, test of independence,
tests for homogeneity, testing for several proportions.
Nonparametric Statistics : nonparametric tests, sign test,
sign-rank test, rank sum test, Kruskal - Wallis test, runs test,
tolerance limits, rank correlation coefficient. Analysis
of variance : Analysis of variance technique
one - way classification, tests for the equality of serveral
variances, comparing treatments with a control, comparing
a set treatment in blocks, randomized complete block
designs, Latin square, random effects models, power
of analysis of variance tests, factorial experiments, 2k
factorial experiments.

Eligibility

Curriculum

Research

Advertising Staff