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. 2021 Aug 19;16(8):e0256435. doi: 10.1371/journal.pone.0256435

Table 2. Maximum DHM storage duration at home and at the HMB, before and after pasteurization (n = 123).

Responses n (%)
Storage at home Maximum storage duration in a refrigerator (before freezing) 0h-Immediate freezing 16 (13)
1h-6h 8 (7)
12h 9 (7)
24h 57 (46)
48h 26 (21)
72h 3 (2)
No handling at home 2 (2)
Other 2 (2)
Maximum storage duration in a freezer 1 week 9 (7)
2 weeks 19 (15)
1 month 14 (11)
2 months 4 (3)
3 months 24 (20)
4 months 17 (14)
6 months 17 (14)
N/A 6 (5)
Not specified 5 (4)
Other 8 (7)
Storage at the HMB before pasteurization Maximum storage duration in a refrigerator 0h-Immediate freezing 32 (26)
12-14h 7 (6)
24h 35 (28)
48h 27 (22)
72h 11 (9)
Don’t know 5 (4)
Other 6 (5)
Maximum storage duration in a freezer 1–2 weeks 5 (4)
1–2 months 14 (11)
3 months 43 (35)
4 months 18 (15)
5 months 2 (2)
6 months 28 (23)
> 6 months 2 (2)
N/A 7 (6)
Don’t know 3 (2)
Other 1 (1)
Storage at the HMB after pasteurization * 4 to 5°C 24h 4 (3)
48h 1 (1)
72h 1 (1)
-18 to -30°C 3 months 39 (34)
4 months 1 (1)
6 months 58 (50)
8–9 months 2 (2)
2 years 1 (1)
Don’t know 1 (1)
-80°C 1 year 5 (4)
Don’t know-N/A 3 (3)
Total duration of DHM storage in a freezer (months) * -18 to -30°C Minimum 2
Maximum 49
Mean ± SD 10.3 ± 5.61
Minimum 13.38
-80°C Maximum 18
Mean ± SD 15.7 ± 1.97

*HMBs that do not pasteurize DHM are not included (n = 7). SD, standard deviation.