Some medicinal herbs plants were used for feeding goats to improve the
quality of labneh made from its milk and hinder goaty off·fla~ur. Five goats groups
were fed on five different rations treatments. R 1 was a control ration free from
medicinal herbs. while R2 was suplemented with chamomile flowers R3 with thyme
leaves, R4 with fennel fruits and R5 with reppermint leaves, Labneh was made from
the produced milk of each treatment and stored for 4 weeks at S±1°C. It was
analyzed at 0, 1, 2. 3 and 4 weeks for moisture, fat contents, titratabte acidity, pH,
SOluble nitrogen. non protein nitrogen, total nitrogen and total bacterial counts. lactic
acid bacteria and coliform groups. The sensory properties were also evaluated. The
resutts revealed that labneh yield of group R2 showed slight increase in its yield were
present, compared with 0 ther groups. Slight increase in moisture content of fresh
labneh of group R2 and R5, whereas their values decreased slightly with storage
period. Acidity of labneh was Increased gradually during the storage period. Nso, the
acidity was Inversely proportional with pH values. Fat content and salt content based
on dry matter as well as total nitrogen content were nearly the same in all treatments.
Gradual increase in soluble nitrogenous compounds as percent of total nitrogen was
observed with storage period. Values of NPNfTN% of labneh of groups R2 and R5
were higher than R1, R3, R4. T.V.FA were lower in groups R1 and R4 in comparison
to those values in R5, R3, and R2 in order. All samples contained the same free fatty
acids in different quantities. G oaty flavour compounds were higher in fresh I abneh
cheese, while, it was decreased in other groups. Storage of labneh samples resulted
In Increased values of total carbonyl content after the first week and decreased after
the second and fourth weeks. Total bacterial count and the count of LAB was
decreased during storage period. The mould and yeast were not detected at the level
of 10¹ and started to grow after two weeks. Organoleptic properties of labneh of R2
(fed on chamomile) recorded best flavour score point as well as body and texture and
total score. Finally, labneh made goats milk treated medicinal herbs in general were
better than those of the control one.