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. 
TABLE 8.—Relation between amount of rot and microscopical counts on tomato products, 
factory samples. 
Average | Average | Average Average | Average | Average 
Da rot, by elds yeasts | Average Day rot, by fields yeasts | Average 
y: weight, :| with and bacteria. i weight, with and bacteria. 
in stock. | molds. spores. in stock. | molds. | spores. 
Per 1/60 | Million | Per 1/60 | Million 
Per cent. | Per cent.| cmm. pence. | Per cent. | Percent.| cmin. per cc. 
Eee ae 0. 5 9 Pd eis .55 ie 1.0 SOK, | Ae See fa aren > SNS 
Peer ee Qe Wt he Owls eine lise a res oe Be Rasseoe 1.2 13 4 6 
Deeeocds 0.3 He Ve Mercia. oesee neni stokersy ss Daepysieior= 1.4 TVS 4 fs he ec aes 
AX 2 Ess 0.4 LO ek ee ral ee a en 1224 Se ease 1.8 9 ai 9 
Sie crys 0.4 7 6 8) PPwecssacc 1.9 PAU sees lea 1 eek ABV 
Gee a aete 0.5 Lit |S eae! INS eee l|:20 ees 2.0 AS Ae case! SIM ne ie 
Tees 0.5 1 OU lhc Ht j] 27-22 2222 DD DAU YAS 2 SER Ne 
Sau Soe 0.5 PAN See Stee (eee ieee 28a). PD) TW 5Y en Pe fa Sr Ee 
Oieacees 0.5 11 3 ll Peoceoee DA |p LGN ae Se | ee 
LOS 2s 0.6 7 Ee A met ick ees We scossed 3.2 OO br ease) seas ee eee 
itt eens 0.8 16 4 Ol seaprales 3.2 SOW a aes ee Nee ects ears 
P2ees oS 0.8 24 8 UG) Bene code 3.8 38 13 14 
We es\eiesic 08 18 14 110) II) Bee oo8 3.8 BU Zies Fas ety etsy LOS Cotsen et 
1 ea ee 0.9 19 il OO 4 eee ce 4.0 41 16 14 
libyeayraeres 0.9 20 13 fe) o5 are 4.0 CORR esteracoreys tetene cies 
GEER <5- () QUIS 2 ape paeee tale Ure 36 Rees 6.0 32 11 il 
Biers ore == (@) PAR e rte cral airman ree Ss Be eats 7.8 4 OU eiaveers els eral Py Niet e arare ve 
US at ests 1.0 2 2 Oileere coos 9.8 UP Geegeeaoeel son aneeere 
TG) a 1.0 8 51 6h || 39. aes 20.0 87 64 156 
20... 1.0 OA Ene See 2 ane) Oe Bis er ae 
i 
1 Summary of all determinations on similar products made on same day. 2 Jnder 1.0. 
