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Luận văn effect of light emitting diode to sunflower sprouts
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Mô tả chi tiết
THAI NGUYEN UNIVERSITY
UNIVERSITY OF AGRICULTURAL AND FORESTRY
VU THI HOA
Topic title:
THE EFFECT OF LIGHT EMITTING DIODE TO SUNFLOWER
SPROUTS
BACHELOR THESIS
Study Mode : Full-time
Major : Food technology
Faculty : Biotechnology and food technology
Batch : 2013-2017
Thai Nguyen, 24/ 06 /2016
c
THAI NGUYEN UNIVERSITY
UNIVERSITY OF AGRICULTURE AND FORESTRY
VU THI HOA
Topic title:
THE EFFECT OF LIGHT EMITTING DIODE TO SUNFLOWER
SPROUTS
BACHELOR THESIS
Study Mode : Full-time
Major : Food Technology
Faculty : Biotechnology and Food Technology
Batch : 2013-2017
Supervisors : Assoc. Prof. Dr. Songsin Photchanachai
Msc. Pham Thi Tuyet Mai
Thai Nguyen, 24/ 06/2016
c
DOCUMENTATION PAGE WITH ABTRACT
Thai Nguyen University of Agriculture and Forestry
Major Food Technology
Student name Vu Thi Hoa
Student ID DTN 1353170023
Thesis Title Effect of Light Emitting Diode to Sunflower
Sprouts
Supervisor(s) Assoc. Prof. Dr. Songsin Photchanachai
Msc. Pham Thi Tuyet Mai
Abstract:
This study evaluated the antioxidant properties of sunflower sprouts (Helianthus annuus L.)
as affected by Light Emitting Diode (LED) illumination. Five to six days old sprouts were
supplied with the lights, including: white LED, blue LED (460 nm), red LED (630 nm),
sunlight, fluorescent light and dark light for 12 h, 36 h, in a controlled environment with the
temperature, relative humidity and light intensity of 250C, 65-70% and 50-60 µmol/m2
s
respectively. Blue LED light resulted in the enhanced DPPH, vitamin C, blue light also
increased phenolic content at 36 h light. Chlorophyll content did not change significantly.
Red LED light decreased phenolic and vitamin C contents, DPPH and chlorophyll contents
also lower than that treated with sunlight (control). White light enhanced vitamin C but
decreased phenolic content. Dark light reduced total antioxidant activity, chlorophyll, vitamin
C and phenolic contents.
Key words: Sunflower, LED lights, antioxidant activity,
phenolic, anthocyanin, vitamin C,
Number of pages: 35
c