การเพิ่มผลผลิตสาหร่ายเกลียวทองโดยการจัดความถี่ในการสัมผัสแสง

Name: สรัญญา ทองเล็ก

Organization : มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

keyword: Spirulinnplatensis

; light exposure frequency

Abstract: This research, improvement of Spirulina platensis productivity by adjusting light exposure frequency was studied. The research was based on these previous results, a cell could increase light utilization efficiency when exiting in flashing light condition and cell growth rate could be increased by increasing light exposure frequency. This research was divided into 3 parts. The first part, the effect of mixing which alters the light exposure of cells was studied mathematically. The results showed that productivity increased from non-mixing system to mixing system and the level of light exposure frequency up to 2 Hz affected significantly on productivity. The second part was to confirm our mathematical procedure in the first part, productivity between laboratory and calculation was compared. The results showed that the difference of productivity between two methods was about 7%. Finally, we used mathematical procedure, which was referred to the first part, to propose an appropriate condition in mass algal cultivation in the present system (rate of vertical mixing is 3 cmlsec) and to propose a strategy for Spirulina platensis productivity improvement. The results showed that in the present system (rate of vertical mixing is 3 cdsec) optimal initial OD,,, was up to the depth of system, i.e. optimal initial OD,,, was 0.2,0.065 and 0.04 at 5-cm , 15-cm and 25-cm depth, respectively. And if we increase frequency of light exposure almost 2 Hz., productivity could be improved at least 12% (at 15-cm depth). However, in this research, factors which might affect on productivity reduction such as photoinhibition, photorespiration were neglected. So the proposed result in the second part might be adjusted when applying to commercial scale.

มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

Address: กรุงเทพมหานคร (Bangkok)

Email: info.lib@mail.kmutt.ac.th

Name: รศ.ดร. ศักรินทร์ ภูมิรัตน

Role: อาจารย์ที่ปรึกษา

Created: 2542

Issued: 2006-01-04

Modified: 2006-05-30

วิทยานิพนธ์/Thesis

ISBN: 9746246518

CallNumber: BIT277

tha

DegreeName: วิทยาศาสตรมหาบัณฑิต

Level: ปริญญาโท

Descipline: เทคโนโลยีชีวภาพ

Grantor: มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

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3	BIT277ab.txt	2 KB	80	2026-05-26 18:16:01

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