PRODUCTION Of NUTRIENT SOURCES FOR RHIZOBIUM

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g/l g/l 16 12 8 4 0 20 16 12 8 4 0 0 2 4 6 8 Days Figure 63. Glycerol production in cultured medium and cell lysates of (a) Isolate PIY2 and (b) Isolate PUY4. The fermentation were performed using YEPD medium containing 5% sucrose for yeast cultivation. p2 0 1 2 3 4 5 0 1 2 3 4 5 6 0 2 4 6 8 Days p4 Glycerol in medium Glycerol in cell lysate (a) Glycerol in cultured medium Glycerol in cell lysate (b) ��
Table 15. The comparison of media for Bradyrhizobium cultivation. 2%starch 5%Sucrose YMB G5 Mannitol - - 5.0 g 1.0 g Glycerol - - - 4.0 ml Yeast extract 3.0 g 10.0 g 0.5 g 1.0 g MgSO4.7H2O 0.5 g - 0.2 g 0.2 g K2HPO4 - - 0.5 g 0.5 g KH2PO4 1.0 g - - - NaCl - - 0.1 g 0.1 g Glucose - - - 1.0 g Arabinose - - - 0.5 g Tryptone - 20.0 g - - Sucrose - 50.0 g - - PVP-40 - - - 20.0 g Fe- EDTA - - - 200 µM (0.073 g/l) Starch 20.0 g - - - Distilled water 1000 ml 1000 ml 1000 ml 1000 ml pH 6.0 5.5 6.8 6.8 ability of yeast to produced glycerol. The cultured medium containing glycerol, can then be used directly for the cultivation of Bradyrhizobium (second stage). In a typical experiment (Figure 63 (a) and (b)) using 5% sucrose, The 5% sucrose fermented by yeast isolate PIY2 gave the maximum yield of glycerol at the first day of cultivation at 14 g/l in cultured medium. However, The yeast isolate PUY4 gave the same level at the second day of cultivation. Relatively, the glycerol in cell lysate were highest at the second day and the third days of fermentation from yeast isolate PIY2 and PUY4, respectively. The yields of glycerol at the second days of fermentation was selected to cultured Bradyrhizobium. Before the cultivation, The cultured medium might adjusted. In a representative experiment the ability of Bradyrhizobium to grow on fermented sucrose medium was tested. In view of the high amounts of glycerol, the medium was ��
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PRODUCTION OF NUTRIENT SOURCES FOR
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PRODUCTION OF NUTRIENT SOURCES FOR
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CHARDCHAI BUROM : PRODUCTION OF NUT
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CONTENTS Page ABSTRACT (THAI)……
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3.6.1� Determination of the suita
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�� 17� Glycerol concent
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40� Time courses of mannitol prod
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59� Effects of various heat shock
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LIST OF TABLES Table Page ��
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LIST OF ABBREVIATIONS Aw water avai
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CHAPTER I INTRODUCTION For mass cul
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available (Burton, 1965). The molec
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1.1.1� Carbon metabolism in Rhizo
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strains unable to use the carbon so
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Figure 2. The fructose bisphosphate
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1.2�Classification of yeasts Mank
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Table 3. (continued). Class Order F
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Ustilaginales (Oberwinkler, 1987).
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f Cystofilobasidium has thick-walle
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Table 5. (continued). Sugar alcohol
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specific cases, but Brown (1978) pr
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KY 6166 was also studied using larg
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Figure 5. Important pathways of gly
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may be present in different ratios.
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amylase systems of the yeast specie
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Table 7. (continued). EC Recommende
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Table 8. (continued). Species a D.p
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Table 9. (continued). Cell product
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2.1.3 Equipment and other materials
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Spotted either the supernatant of c
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amylase action, the actual reaction
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A) Determination of the suitable an
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B) Salt-stress conditions Fifty mil
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2.2.8 Cultivation of Bradyrhizobium
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The cultured medium of yeast. Quant
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intervals for accumulation of gas i
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CHAPTER III RESULTS AND DISCUSSION
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Glycerol Xylitol Glucose Mannitol S
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Glycerol Xylitol Glucose Mannitol S
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Table 10. Primary screening of glyc
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Table 10. (continued). No. Isolate
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Glycerol in cell lysate (g/l) A Gly
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average were 4-10 g of glycerol per
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were isolated from fresh fruits, Ma
Page 89 and 90: �third day of incubation (Figure
Page 91 and 92: Reducing sugars (g/l) Reducing suga
Page 93 and 94: These results indicated that the co
Page 95 and 96: 3.6.1 Determination of the suitable
Page 97 and 98: g/l 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4
Page 99 and 100: Reducing sugars (g/l) 8 6 4 2 0 0 1
Page 101 and 102: Reducing sugars (g/l) 4.0 3.5 3.0 2
Page 103 and 104: g/l 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0
Page 105 and 106: g/l g/l g/l 1.5 1.0 0.5 0.0 1.2 1.0
Page 107 and 108: Starch fermentation was conducted i
Page 109 and 110: g/l g/l 7 6 5 4 3 2 1 0 8 6 4 2 0 0
Page 111 and 112: g/l g/l 8 6 4 2 0 8 6 4 2 0 1 2 3 4
Page 113 and 114: g/l g/l 8 6 4 2 0 8 6 4 2 0 0 1 1 2
Page 115 and 116: g/l g/l 1.6 1.4 1.2 1.0 0.8 0.6 0.4
Page 117 and 118: g/l g/l 1.6 1.4 1.2 1.0 0.8 0.6 0.4
Page 119 and 120: The results showed that amounts var
Page 121 and 122: g/l g/l 4.0 3.5 3.0 2.5 2.0 1.5 1.0
Page 123 and 124: �� fermentation, but the inc
Page 125 and 126: g/l g/l 2.0 1.6 1.2 0.8 0.4 0.0 3.2
Page 127 and 128: g/l g/l 1.2 1.0 0.8 0.6 0.4 0.2 0.0
Page 129 and 130: �� intracellularly a decreas
Page 131 and 132: g/l g/l 5.0 4.0 3.0 2.0 1.0 0.0 2.5
Page 133 and 134: g/l g/l 2 1.8 1.6 1.4 1.2 1 0.8 0.6
Page 135 and 136: g/L 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 0
Page 137 and 138: g/l 8 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7
Page 139: �� effected by heat shock po
Page 143 and 144: Table 17. Growth of Bradyrhizobium
Page 145 and 146: �� Rhizobium (Stowers, 1985;
Page 147 and 148: �� 3.9 Identification of yea
Page 149 and 150: KAY1 PIY2 PUY4 Y69 LIY2 COY1 FAY2 C
Page 151 and 152: �� assimilations were observ
Page 153 and 154: Table 20. (continued). Yeast strain
Page 155 and 156: Table 20. (continued). 15. Pichia k
Page 157 and 158: �� 3.9.5 Ascospore formation
Page 159 and 160: (a) (b) (c ) (d) (e) �� Figu
Page 161 and 162: (a) (b) (c) (d) (e) (f) �� F
Page 163 and 164: (c) (a) �� Figure 72. Cell m
Page 165 and 166: �� Metshnikowia (Pitt and Mi
Page 167 and 168: CHAPTER IV CONCLUSION This study ex
Page 169 and 170: only a low capital investment. Ther
Page 171 and 172: �� Barnett, J. A., Payne, R.
Page 173 and 174: �� De Mot, R., and Verachter
Page 175 and 176: �� Jennings, D. H. (1995). T
Page 177 and 178: �� Lie, T. A., Muilenbury M.
Page 179 and 180: �� Onishi, H., and Suzuki, T
Page 181 and 182: �� Sinclair, N. A., and Stok
Page 183 and 184: �� Van Rossum, D., Schuurman
Page 185 and 186: �� Young, J. P. W., and Hauk
Page 187 and 188: Acetone Methanol Solvent for mobile
Page 189 and 190: � 300 µg/ml, 200 µg/ml, and 100
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Soluble Starch 20.0 g Distilled wat
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13.�Nitrate broth KNO 3 1.0 g Glu
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If the sample had been diluted befo
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Table 1D. (continued). Source of ye
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E. Additional figures Abs 540 nm (a
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Abs 580 nm 1.4 1.2 1 0.8 0.6 0.4 0.
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Figure 7E. Calibration curves for H
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Figure 9E. Example of HPLC chromato
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Cell/mL 1.0E+09 8.0E+08 6.0E+08 4.0
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PRODUCTION Of NUTRIENT SOURCES FOR RHIZOBIUM

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