Show that the integral of a two-parameter function is Hölder continuous

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Let

  • $(\Omega,\mathcal A,\mu)$ be a measure space
  • $(M,d)$ be a metric space
  • $\Lambda\subseteq M$
  • $E$ be a $\mathbb R$-Banach space
  • $f:\Omega\times\Lambda\to E$ with $$f(\;\cdot\;,x)\in\mathcal L^1(\mu;E)\;\;\;\text{for all }x\in\Lambda\tag1$$ and $$f(\omega,\;\cdot\;)\in C^{0+\alpha}(\Lambda,E)\;\;\;\text{for }\mu\text{-almost all }\omega\in\Omega\tag2$$ for some $\alpha\in(0,1]$ and $$F(x):=\int f(\;\cdot\;,x)\:{\rm d}\mu\;\;\;\text{for }x\in\Lambda$$

Are we able to show that $F\in C^{0+\alpha}(\Lambda,E)$?

My idea is to impose the assumption that $$\int\left\|\left.f(\omega,\;\cdot\;)\right|_K\right\|_{C^{0+\alpha}(K,\:E)}\:{\rm d}\mu(\omega)<\infty\;\;\;\text{for all compact }K\subseteq\Lambda\tag3,$$ where $$\left\|g\right\|_{C^{0+\alpha}(A,\:E)}:=\sup_{x\in A}\left\|g(x)\right\|_E+\sup_{\substack{x,\:y\:\in\:A\\x\:\ne\:y}}\frac{\left\|g(x)-g(y)\right\|_E}{d(x,y)^\alpha}\;\;\;\text{for }g:A\to E$$ for $A\subseteq M$. Can we show the desired claim under this assumption?