scholarly journals Combined techniques for characterising pasta structure reveals how the gluten network slows enzymic digestion rate

2015 ◽  
Vol 188 ◽  
pp. 559-568 ◽  
Author(s):  
Wei Zou ◽  
Mike Sissons ◽  
Michael J. Gidley ◽  
Robert G. Gilbert ◽  
Frederick J. Warren
Keyword(s):  
Digestion Rate ◽  
Enzymic Digestion

Toxicity of Sulfite and Cadmium to Anaerobic Granular Sludge

1994 ◽  
Vol 29 (4) ◽  
pp. 581-598
Author(s):  
C.F. Shew ◽  
N. Kosaric
Keyword(s):  
Granular Sludge ◽  
Upflow Anaerobic Sludge Blanket ◽  
Shock Load ◽  
Anaerobic Sludge ◽  
Anaerobic Granular Sludge ◽  
Scanning Electron Micrographs ◽  
Bacterial Growth Rate ◽  
Digestion Rate ◽  
Sulfate Reducing ◽  
Load Conditions

Abstract Toxicity of sulfite (Na2SO3) and cadmium (CdCl2) ions to anaerobic granular sludge was investigated in 1.2 litre bench-scale upflow anaerobic sludge blanket (UASB) reactors during process acclimation and shock load conditions. Minimal sulfite toxicity was observed under gradual and shock load conditions at sulfite concentrations of up to 1000 mg S/L if proper acclimation was allowed to occur. No long-term toxic effects were observed although the COD digestion rate was temporarily inhibited by shock load of sulfite. Scanning electron micrographs indicated that more sulfate-reducing bacteria were present in the granules developed in the reactors with sulfite supplement although rod-shaped Methanosaeta-like bacteria were still dominant. High bacterial growth rate was observed in the reactors which were supplied with the feed containing sulfite. The COD digestion rate was inhibited at a cadmium loading rate of 2.4 g Cd per day under both acclimation and shock load conditions. Acclimation did not seem to improve the bacteria to tolerate the toxicity of cadmium. The concentration of free cadmium was very low in the reactors under normal conditions, but increased rapidly when the COD digestion in the reactors ceased. The bacteria could not be reactivated after inhibited by cadmium. When reactors were operated at low specific COD loading rates, more inorganic precipitates were formed inside the granules which consequently settled faster.

Reduction in mercury content of fish protein concentrate by enzymic digestion

1973 ◽  
Vol 21 (6) ◽  
pp. 1116-1117 ◽  
Author(s):  
Michael C. Archer ◽  
Bruce R. Stillings ◽  
Steven R. Tannenbaum ◽  
Daniel I. C. Wang
Keyword(s):  
Mercury Content ◽  
Protein Concentrate ◽  
Fish Protein ◽  
Enzymic Digestion

Isolation of alkaloids and glycosides from tissue following enzymic digestion

1988 ◽  
Vol 37 (4) ◽  
pp. 243-248 ◽  
Author(s):  
V. Shankar ◽  
C. Damodaran ◽  
P. Chandra Sekharan
Keyword(s):  
Enzymic Digestion

scholarly journals POLA PEMANGSAAN LARVA IKAN KAKAP MERAH, Lutjanus sebae

2016 ◽  
Vol 1 (1) ◽  
pp. 49
Author(s):  
Regina Melianawati ◽  
Philip Teguh Imanto ◽  
Made Suastika
Keyword(s):  
Light Intensity ◽  
Feeding Activity ◽  
Feeding Pattern ◽  
Natural Light ◽  
Digestion Time ◽  
Digestion Rate ◽  
Minimum Light ◽  
Intensity Condition

Penelitian ini bertujuan untuk mengetahui pola pemangsaan dari larva ikan kakap merah, L. sebae umur 5 dan 10 hari yang dipelihara dengan kondisi pencahayaan alami. Pengambilan sampel dilakukan setiap satu jam pada masing-masing umur tersebut. Hasil pengamatan menunjukkan bahwa secara alami pola pemangsaan larva L. sebae tergantung pada kondisi pencahayaan, di mana aktivitas pemangsaan berlangsung secara maksimal pada saat tersedia pencahayaan dengan intensitas yang mencukupi untuk larva menangkap mangsanya. Intensitas cahaya minimal yang diperlukan oleh larva L. sebae untuk melakukan pemangsaan berada pada kisaran 400—600 lux. Maksimal pemangsaan satu larva pada umur 5 dan 10 hari adalah 6,2 dan 25,3 individu rotifer. Lama waktu pencernaan larva umur 5 dan 10 hari adalah 4 dan 5 jam, sedangkan laju cerna larva pada masing-masing umur tersebut adalah 1,50 dan 2,76 individu rotifer per jam.The aim of this research was to get the information about the feeding pattern of emperor snapper L. sebae larvae at 5 and 10 days olds reared under natural light intensity. Larvae samples were taken every hour from each age. The result showed that naturally, feeding pattern of emperor snapper larvae depend on the light intensity condition, feeding activity would be done when the light intensity was enough available for supporting larvae to feed. Minimum light intensity that needed by the larvae for feeding activity was range between 400—600 lux. Maximum feeding per larvae at 5 and 10 days olds were 6.2 and 25.3 individual rotifers. Digestion time of larvae at those ages was 4 and 5 hours, while digestion rate were 1.50 and 2.76 individual rotifers per hour.

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