MICROSCOPICAL STUDIES ON TOMATO PRODUCTS. 11 
FACTORY SAMPLES. 
To obtain data on a practical manufacturing scale, tests under 
various factory conditions were conducted. In some of the plants 
the conditions were excellent, while in others they were highly objec- 
tionable. In making the tests the amount of decay was estimated 
or determined by weight as accurately as was practicable. With 
whole tomato stock it was usually customary to take a representa- 
tive sample of from 25 to 50 pounds from the stream of sorted and 
washed stock on its way to the breaking-up tanks or to the cyclones. 
Tach tomato in such a sample was inspected critically and the bad 
portions cut out and separated from the good portions. The parts 
thus separated were then weighed and the percentage of rotten or 
decayed material calculated. To estimate the amount of decay in 
the trimming pulps the amount of decayed material in the peeling 
stock was determined as in the case of the whole tomato stock. 
Since all the decayed material in the peeling stock is left in the 
trimmings, the percentage as determined on the scalded stock was 
multiplied by two. Although this may not be strictly accurate, it 
approximates the true figure nearly enough to be used as a practical 
working factor. It was adopted in calculating the data after tests 
had been. conducted in various plants to determine what proportion 
of the stock sent to the peelers is left in the trimmings. 
Field work performed during the last three seasons has demon- 
strated that with proper cquipment and factory management there 
is no excuse for the stock which is ready for the cyclone to contain 
over 1 per cent of decayed material. Any excess is traceable to 
some fault in the system or to improper management. 
Tas LE 8.—Relation between amount of rot and microscopical counts on tomato products, 
factory samples.} 
Average | Average | Average Average | Average | Average 
Da rot, by fields yeasts | Average Da rot, by fields yeasts | Average 
y- weight, with and bacteria. y- weight, with and bacteria. 
in stock.| molds. } spores. | in stock. | molds. | spores. 
Per 1/60 | Million Per 1/60 | Million 
Per cent. | Percent.| cmm. per cc. Per cent. | Per cent.| cmm. per cc. 
1 eee 0.2 5 ZA Lee Ori Ay 1.0 PAQ VANES ea ae Ate RUAN ee ah 
pe ee 0.2 CEL ei ee Spe Le A PPL Raea ae ei 13 4 6 
Seeeiteas 0.3 Ch eras a on So oe Pasa ant 1.4 WPS h eercreh Ae Seige Cease © 
CS oe 0.4 DS eels Saale vais eae 2 DA ee es 1.8 9 7 9 
Seen. 4 0.4 7 6 Qn ines ees 1.9 PME Aigo a LA lh 
Gime eiae: 5 0.5 B37 | (ee tet | aes ee araea 2G ara ate) == 2.0 AU Sn Re gins oa eget 
Reo crce 0.5 QE ess aa ee PA et Be eases 2.1 DAN Ee ah se oh AIBN ae 
GOGH & 0.5 7A NAN ee oe) Ca Same Sa cicishete 2.2 1G ui 22 Spice Bera eee 
ORR 0.5 11 3 Dale eyes lores 2.4 A oe eee eee el es Ee 
LON sot 0.6 PALM leer eetsea el | aye Meeee ea BOREAL ee 3.2 BOs She eal lees 
1 ey eae aS 0.8 16 4 Ob|lioleertersere 3.2 Ohi cers Eee Ses eee ree 
ee 0.8 24 8 IG) IGE rekon 3.8 38 13 14 
Gee 0.8 18 14 NO) We oeoe oes 3.8 Vile SSA | Fee aa TT 
ee 0.9 19 11 OF Rose ese 4.0 41 16 14 
ip eae 0.9 20 13 de WROD eee lore 4.0 GOu Rhea eae es 
Ne cae (2) io tert yes leper reenere SOnsoa oy 6.0 32 11 11 
g(a (2) 1 Veo a ae ai aD Vesta ke 7.8 cA SD Be Yap MY el a 
NS vn Shs 2 1.0 2 2 Ul Gliese eons 9.8 (OAS BeBe eee (mre ce 
NOE os rs 38 1.0 8 5 GR no Dee ase 20.0 87 64 156 
DOE Becca 1.0 Dt eal Ste eset rales 
1Summary of all determinations on similar products made on same day, 2 Under 1.0. 
